21655725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 46663680

約数和(自身を除く): 25007955

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 25, 35, 39, 57, 65, 75, 91, 95, 105, 133, 167, 175, 195, 247, 273, 285, 325, 399, 455, 475, 501, 525, 665, 741, 835, 975, 1169, 1235, 1365, 1425, 1729, 1995, 2171, 2275, 2505, 3173, 3325, 3507, 3705, 4175, 5187, 5845, 6175, 6513, 6825, 8645, 9519, 9975, 10855, 12525, 15197, 15865, 17535, 18525, 22211, 25935, 29225, 32565, 41249, 43225, 45591, 47595, 54275, 66633, 75985, 79325, 87675, 111055, 123747, 129675, 162825, 206245, 227955, 237975, 288743, 333165, 379925, 555275, 618735, 866229, 1031225, 1139775, 1443715, 1665825, 3093675, 4331145, 7218575, 21655725]

約数ペア:

[(1, 21655725), (3, 7218575), (5, 4331145), (7, 3093675), (13, 1665825), (15, 1443715), (19, 1139775), (21, 1031225), (25, 866229), (35, 618735), (39, 555275), (57, 379925), (65, 333165), (75, 288743), (91, 237975), (95, 227955), (105, 206245), (133, 162825), (167, 129675), (175, 123747), (195, 111055), (247, 87675), (273, 79325), (285, 75985), (325, 66633), (399, 54275), (455, 47595), (475, 45591), (501, 43225), (525, 41249), (665, 32565), (741, 29225), (835, 25935), (975, 22211), (1169, 18525), (1235, 17535), (1365, 15865), (1425, 15197), (1729, 12525), (1995, 10855), (2171, 9975), (2275, 9519), (2505, 8645), (3173, 6825), (3325, 6513), (3507, 6175), (3705, 5845), (4175, 5187)]