21258960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{313}}^1$

素因数の和:612

約数の個数: 80

約数和(自身を含む): 66346944

約数和(自身を除く): 45087984

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 283, 313, 566, 626, 849, 939, 1132, 1252, 1415, 1565, 1698, 1878, 2264, 2504, 2830, 3130, 3396, 3756, 4245, 4528, 4695, 5008, 5660, 6260, 6792, 7512, 8490, 9390, 11320, 12520, 13584, 15024, 16980, 18780, 22640, 25040, 33960, 37560, 67920, 75120, 88579, 177158, 265737, 354316, 442895, 531474, 708632, 885790, 1062948, 1328685, 1417264, 1771580, 2125896, 2657370, 3543160, 4251792, 5314740, 7086320, 10629480, 21258960]

約数ペア:

[(1, 21258960), (2, 10629480), (3, 7086320), (4, 5314740), (5, 4251792), (6, 3543160), (8, 2657370), (10, 2125896), (12, 1771580), (15, 1417264), (16, 1328685), (20, 1062948), (24, 885790), (30, 708632), (40, 531474), (48, 442895), (60, 354316), (80, 265737), (120, 177158), (240, 88579), (283, 75120), (313, 67920), (566, 37560), (626, 33960), (849, 25040), (939, 22640), (1132, 18780), (1252, 16980), (1415, 15024), (1565, 13584), (1698, 12520), (1878, 11320), (2264, 9390), (2504, 8490), (2830, 7512), (3130, 6792), (3396, 6260), (3756, 5660), (4245, 5008), (4528, 4695)]