21573540

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 71180928

約数和(自身を除く): 49607388

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 81, 90, 92, 108, 115, 135, 138, 162, 180, 193, 207, 230, 243, 270, 276, 324, 345, 386, 405, 414, 460, 486, 540, 579, 621, 690, 772, 810, 828, 965, 972, 1035, 1158, 1215, 1242, 1380, 1620, 1737, 1863, 1930, 2070, 2316, 2430, 2484, 2895, 3105, 3474, 3726, 3860, 4140, 4439, 4860, 5211, 5589, 5790, 6210, 6948, 7452, 8685, 8878, 9315, 10422, 11178, 11580, 12420, 13317, 15633, 17370, 17756, 18630, 20844, 22195, 22356, 26055, 26634, 27945, 31266, 34740, 37260, 39951, 44390, 46899, 52110, 53268, 55890, 62532, 66585, 78165, 79902, 88780, 93798, 104220, 111780, 119853, 133170, 156330, 159804, 187596, 199755, 234495, 239706, 266340, 312660, 359559, 399510, 468990, 479412, 599265, 719118, 799020, 937980, 1078677, 1198530, 1438236, 1797795, 2157354, 2397060, 3595590, 4314708, 5393385, 7191180, 10786770, 21573540]

約数ペア:

[(1, 21573540), (2, 10786770), (3, 7191180), (4, 5393385), (5, 4314708), (6, 3595590), (9, 2397060), (10, 2157354), (12, 1797795), (15, 1438236), (18, 1198530), (20, 1078677), (23, 937980), (27, 799020), (30, 719118), (36, 599265), (45, 479412), (46, 468990), (54, 399510), (60, 359559), (69, 312660), (81, 266340), (90, 239706), (92, 234495), (108, 199755), (115, 187596), (135, 159804), (138, 156330), (162, 133170), (180, 119853), (193, 111780), (207, 104220), (230, 93798), (243, 88780), (270, 79902), (276, 78165), (324, 66585), (345, 62532), (386, 55890), (405, 53268), (414, 52110), (460, 46899), (486, 44390), (540, 39951), (579, 37260), (621, 34740), (690, 31266), (772, 27945), (810, 26634), (828, 26055), (965, 22356), (972, 22195), (1035, 20844), (1158, 18630), (1215, 17756), (1242, 17370), (1380, 15633), (1620, 13317), (1737, 12420), (1863, 11580), (1930, 11178), (2070, 10422), (2316, 9315), (2430, 8878), (2484, 8685), (2895, 7452), (3105, 6948), (3474, 6210), (3726, 5790), (3860, 5589), (4140, 5211), (4439, 4860)]