21200940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{569}}^1$

素因数の和:613

約数の個数: 120

約数和(自身を含む): 69521760

約数和(自身を除く): 48320820

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, 207, 230, 270, 276, 324, 345, 405, 414, 460, 540, 569, 621, 690, 810, 828, 1035, 1138, 1242, 1380, 1620, 1707, 1863, 2070, 2276, 2484, 2845, 3105, 3414, 3726, 4140, 5121, 5690, 6210, 6828, 7452, 8535, 9315, 10242, 11380, 12420, 13087, 15363, 17070, 18630, 20484, 25605, 26174, 30726, 34140, 37260, 39261, 46089, 51210, 52348, 61452, 65435, 76815, 78522, 92178, 102420, 117783, 130870, 153630, 157044, 184356, 196305, 230445, 235566, 261740, 307260, 353349, 392610, 460890, 471132, 588915, 706698, 785220, 921780, 1060047, 1177830, 1413396, 1766745, 2120094, 2355660, 3533490, 4240188, 5300235, 7066980, 10600470, 21200940]

約数ペア:

[(1, 21200940), (2, 10600470), (3, 7066980), (4, 5300235), (5, 4240188), (6, 3533490), (9, 2355660), (10, 2120094), (12, 1766745), (15, 1413396), (18, 1177830), (20, 1060047), (23, 921780), (27, 785220), (30, 706698), (36, 588915), (45, 471132), (46, 460890), (54, 392610), (60, 353349), (69, 307260), (81, 261740), (90, 235566), (92, 230445), (108, 196305), (115, 184356), (135, 157044), (138, 153630), (162, 130870), (180, 117783), (207, 102420), (230, 92178), (270, 78522), (276, 76815), (324, 65435), (345, 61452), (405, 52348), (414, 51210), (460, 46089), (540, 39261), (569, 37260), (621, 34140), (690, 30726), (810, 26174), (828, 25605), (1035, 20484), (1138, 18630), (1242, 17070), (1380, 15363), (1620, 13087), (1707, 12420), (1863, 11380), (2070, 10242), (2276, 9315), (2484, 8535), (2845, 7452), (3105, 6828), (3414, 6210), (3726, 5690), (4140, 5121)]