21121560

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 192

約数和(自身を含む): 74299680

約数和(自身を除く): 53178120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 41, 45, 53, 54, 60, 72, 81, 82, 90, 106, 108, 120, 123, 135, 159, 162, 164, 180, 205, 212, 216, 243, 246, 265, 270, 318, 324, 328, 360, 369, 405, 410, 424, 477, 486, 492, 530, 540, 615, 636, 648, 738, 795, 810, 820, 954, 972, 984, 1060, 1080, 1107, 1215, 1230, 1272, 1431, 1476, 1590, 1620, 1640, 1845, 1908, 1944, 2120, 2173, 2214, 2385, 2430, 2460, 2862, 2952, 3180, 3240, 3321, 3690, 3816, 4293, 4346, 4428, 4770, 4860, 4920, 5535, 5724, 6360, 6519, 6642, 7155, 7380, 8586, 8692, 8856, 9540, 9720, 9963, 10865, 11070, 11448, 12879, 13038, 13284, 14310, 14760, 16605, 17172, 17384, 19080, 19557, 19926, 21465, 21730, 22140, 25758, 26076, 26568, 28620, 32595, 33210, 34344, 39114, 39852, 42930, 43460, 44280, 49815, 51516, 52152, 57240, 58671, 64395, 65190, 66420, 78228, 79704, 85860, 86920, 97785, 99630, 103032, 117342, 128790, 130380, 132840, 156456, 171720, 176013, 195570, 199260, 234684, 257580, 260760, 293355, 352026, 391140, 398520, 469368, 515160, 528039, 586710, 704052, 782280, 880065, 1056078, 1173420, 1408104, 1760130, 2112156, 2346840, 2640195, 3520260, 4224312, 5280390, 7040520, 10560780, 21121560]

約数ペア:

[(1, 21121560), (2, 10560780), (3, 7040520), (4, 5280390), (5, 4224312), (6, 3520260), (8, 2640195), (9, 2346840), (10, 2112156), (12, 1760130), (15, 1408104), (18, 1173420), (20, 1056078), (24, 880065), (27, 782280), (30, 704052), (36, 586710), (40, 528039), (41, 515160), (45, 469368), (53, 398520), (54, 391140), (60, 352026), (72, 293355), (81, 260760), (82, 257580), (90, 234684), (106, 199260), (108, 195570), (120, 176013), (123, 171720), (135, 156456), (159, 132840), (162, 130380), (164, 128790), (180, 117342), (205, 103032), (212, 99630), (216, 97785), (243, 86920), (246, 85860), (265, 79704), (270, 78228), (318, 66420), (324, 65190), (328, 64395), (360, 58671), (369, 57240), (405, 52152), (410, 51516), (424, 49815), (477, 44280), (486, 43460), (492, 42930), (530, 39852), (540, 39114), (615, 34344), (636, 33210), (648, 32595), (738, 28620), (795, 26568), (810, 26076), (820, 25758), (954, 22140), (972, 21730), (984, 21465), (1060, 19926), (1080, 19557), (1107, 19080), (1215, 17384), (1230, 17172), (1272, 16605), (1431, 14760), (1476, 14310), (1590, 13284), (1620, 13038), (1640, 12879), (1845, 11448), (1908, 11070), (1944, 10865), (2120, 9963), (2173, 9720), (2214, 9540), (2385, 8856), (2430, 8692), (2460, 8586), (2862, 7380), (2952, 7155), (3180, 6642), (3240, 6519), (3321, 6360), (3690, 5724), (3816, 5535), (4293, 4920), (4346, 4860), (4428, 4770)]