21374325

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 44955456

約数和(自身を除く): 23581131

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 41, 45, 63, 75, 105, 123, 175, 205, 225, 287, 315, 331, 369, 525, 615, 861, 993, 1025, 1435, 1575, 1655, 1845, 2317, 2583, 2979, 3075, 4305, 4965, 6951, 7175, 8275, 9225, 11585, 12915, 13571, 14895, 20853, 21525, 24825, 34755, 40713, 57925, 64575, 67855, 74475, 94997, 104265, 122139, 173775, 203565, 284991, 339275, 474985, 521325, 610695, 854973, 1017825, 1424955, 2374925, 3053475, 4274865, 7124775, 21374325]

約数ペア:

[(1, 21374325), (3, 7124775), (5, 4274865), (7, 3053475), (9, 2374925), (15, 1424955), (21, 1017825), (25, 854973), (35, 610695), (41, 521325), (45, 474985), (63, 339275), (75, 284991), (105, 203565), (123, 173775), (175, 122139), (205, 104265), (225, 94997), (287, 74475), (315, 67855), (331, 64575), (369, 57925), (525, 40713), (615, 34755), (861, 24825), (993, 21525), (1025, 20853), (1435, 14895), (1575, 13571), (1655, 12915), (1845, 11585), (2317, 9225), (2583, 8275), (2979, 7175), (3075, 6951), (4305, 4965)]