20811600

素因数分解:

$2^4\times 3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:115

約数の個数: 240

約数和(自身を含む): 77495040

約数和(自身を除く): 56683440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 41, 45, 47, 48, 50, 54, 60, 72, 75, 80, 82, 90, 94, 100, 108, 120, 123, 135, 141, 144, 150, 164, 180, 188, 200, 205, 216, 225, 235, 240, 246, 270, 282, 300, 328, 360, 369, 376, 400, 410, 423, 432, 450, 470, 492, 540, 564, 600, 615, 656, 675, 705, 720, 738, 752, 820, 846, 900, 940, 984, 1025, 1080, 1107, 1128, 1175, 1200, 1230, 1269, 1350, 1410, 1476, 1640, 1692, 1800, 1845, 1880, 1927, 1968, 2050, 2115, 2160, 2214, 2256, 2350, 2460, 2538, 2700, 2820, 2952, 3075, 3280, 3384, 3525, 3600, 3690, 3760, 3854, 4100, 4230, 4428, 4700, 4920, 5076, 5400, 5535, 5640, 5781, 5904, 6150, 6345, 6768, 7050, 7380, 7708, 8200, 8460, 8856, 9225, 9400, 9635, 9840, 10152, 10575, 10800, 11070, 11280, 11562, 12300, 12690, 14100, 14760, 15416, 16400, 16920, 17343, 17712, 18450, 18800, 19270, 20304, 21150, 22140, 23124, 24600, 25380, 27675, 28200, 28905, 29520, 30832, 31725, 33840, 34686, 36900, 38540, 42300, 44280, 46248, 48175, 49200, 50760, 52029, 55350, 56400, 57810, 63450, 69372, 73800, 77080, 84600, 86715, 88560, 92496, 96350, 101520, 104058, 110700, 115620, 126900, 138744, 144525, 147600, 154160, 169200, 173430, 192700, 208116, 221400, 231240, 253800, 260145, 277488, 289050, 346860, 385400, 416232, 433575, 442800, 462480, 507600, 520290, 578100, 693720, 770800, 832464, 867150, 1040580, 1156200, 1300725, 1387440, 1734300, 2081160, 2312400, 2601450, 3468600, 4162320, 5202900, 6937200, 10405800, 20811600]

約数ペア:

[(1, 20811600), (2, 10405800), (3, 6937200), (4, 5202900), (5, 4162320), (6, 3468600), (8, 2601450), (9, 2312400), (10, 2081160), (12, 1734300), (15, 1387440), (16, 1300725), (18, 1156200), (20, 1040580), (24, 867150), (25, 832464), (27, 770800), (30, 693720), (36, 578100), (40, 520290), (41, 507600), (45, 462480), (47, 442800), (48, 433575), (50, 416232), (54, 385400), (60, 346860), (72, 289050), (75, 277488), (80, 260145), (82, 253800), (90, 231240), (94, 221400), (100, 208116), (108, 192700), (120, 173430), (123, 169200), (135, 154160), (141, 147600), (144, 144525), (150, 138744), (164, 126900), (180, 115620), (188, 110700), (200, 104058), (205, 101520), (216, 96350), (225, 92496), (235, 88560), (240, 86715), (246, 84600), (270, 77080), (282, 73800), (300, 69372), (328, 63450), (360, 57810), (369, 56400), (376, 55350), (400, 52029), (410, 50760), (423, 49200), (432, 48175), (450, 46248), (470, 44280), (492, 42300), (540, 38540), (564, 36900), (600, 34686), (615, 33840), (656, 31725), (675, 30832), (705, 29520), (720, 28905), (738, 28200), (752, 27675), (820, 25380), (846, 24600), (900, 23124), (940, 22140), (984, 21150), (1025, 20304), (1080, 19270), (1107, 18800), (1128, 18450), (1175, 17712), (1200, 17343), (1230, 16920), (1269, 16400), (1350, 15416), (1410, 14760), (1476, 14100), (1640, 12690), (1692, 12300), (1800, 11562), (1845, 11280), (1880, 11070), (1927, 10800), (1968, 10575), (2050, 10152), (2115, 9840), (2160, 9635), (2214, 9400), (2256, 9225), (2350, 8856), (2460, 8460), (2538, 8200), (2700, 7708), (2820, 7380), (2952, 7050), (3075, 6768), (3280, 6345), (3384, 6150), (3525, 5904), (3600, 5781), (3690, 5640), (3760, 5535), (3854, 5400), (4100, 5076), (4230, 4920), (4428, 4700)]