21805560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1$

素因数の和:550

約数の個数: 192

約数和(自身を含む): 85924800

約数和(自身を除く): 64119240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 51, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 119, 120, 126, 136, 140, 153, 168, 170, 180, 204, 210, 238, 252, 255, 280, 306, 315, 340, 357, 360, 408, 420, 476, 504, 509, 510, 595, 612, 630, 680, 714, 765, 840, 952, 1018, 1020, 1071, 1190, 1224, 1260, 1428, 1527, 1530, 1785, 2036, 2040, 2142, 2380, 2520, 2545, 2856, 3054, 3060, 3563, 3570, 4072, 4284, 4581, 4760, 5090, 5355, 6108, 6120, 7126, 7140, 7635, 8568, 8653, 9162, 10180, 10689, 10710, 12216, 14252, 14280, 15270, 17306, 17815, 18324, 20360, 21378, 21420, 22905, 25959, 28504, 30540, 32067, 34612, 35630, 36648, 42756, 42840, 43265, 45810, 51918, 53445, 60571, 61080, 64134, 69224, 71260, 77877, 85512, 86530, 91620, 103836, 106890, 121142, 128268, 129795, 142520, 155754, 160335, 173060, 181713, 183240, 207672, 213780, 242284, 256536, 259590, 302855, 311508, 320670, 346120, 363426, 389385, 427560, 484568, 519180, 545139, 605710, 623016, 641340, 726852, 778770, 908565, 1038360, 1090278, 1211420, 1282680, 1453704, 1557540, 1817130, 2180556, 2422840, 2725695, 3115080, 3634260, 4361112, 5451390, 7268520, 10902780, 21805560]

約数ペア:

[(1, 21805560), (2, 10902780), (3, 7268520), (4, 5451390), (5, 4361112), (6, 3634260), (7, 3115080), (8, 2725695), (9, 2422840), (10, 2180556), (12, 1817130), (14, 1557540), (15, 1453704), (17, 1282680), (18, 1211420), (20, 1090278), (21, 1038360), (24, 908565), (28, 778770), (30, 726852), (34, 641340), (35, 623016), (36, 605710), (40, 545139), (42, 519180), (45, 484568), (51, 427560), (56, 389385), (60, 363426), (63, 346120), (68, 320670), (70, 311508), (72, 302855), (84, 259590), (85, 256536), (90, 242284), (102, 213780), (105, 207672), (119, 183240), (120, 181713), (126, 173060), (136, 160335), (140, 155754), (153, 142520), (168, 129795), (170, 128268), (180, 121142), (204, 106890), (210, 103836), (238, 91620), (252, 86530), (255, 85512), (280, 77877), (306, 71260), (315, 69224), (340, 64134), (357, 61080), (360, 60571), (408, 53445), (420, 51918), (476, 45810), (504, 43265), (509, 42840), (510, 42756), (595, 36648), (612, 35630), (630, 34612), (680, 32067), (714, 30540), (765, 28504), (840, 25959), (952, 22905), (1018, 21420), (1020, 21378), (1071, 20360), (1190, 18324), (1224, 17815), (1260, 17306), (1428, 15270), (1527, 14280), (1530, 14252), (1785, 12216), (2036, 10710), (2040, 10689), (2142, 10180), (2380, 9162), (2520, 8653), (2545, 8568), (2856, 7635), (3054, 7140), (3060, 7126), (3563, 6120), (3570, 6108), (4072, 5355), (4284, 5090), (4581, 4760)]