21021240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{619}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 63388800

約数和(自身を除く): 42367560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 283, 566, 619, 849, 1132, 1238, 1415, 1698, 1857, 2264, 2476, 2830, 3095, 3396, 3714, 4245, 4952, 5660, 6190, 6792, 7428, 8490, 9285, 11320, 12380, 14856, 16980, 18570, 24760, 33960, 37140, 74280, 175177, 350354, 525531, 700708, 875885, 1051062, 1401416, 1751770, 2102124, 2627655, 3503540, 4204248, 5255310, 7007080, 10510620, 21021240]

約数ペア:

[(1, 21021240), (2, 10510620), (3, 7007080), (4, 5255310), (5, 4204248), (6, 3503540), (8, 2627655), (10, 2102124), (12, 1751770), (15, 1401416), (20, 1051062), (24, 875885), (30, 700708), (40, 525531), (60, 350354), (120, 175177), (283, 74280), (566, 37140), (619, 33960), (849, 24760), (1132, 18570), (1238, 16980), (1415, 14856), (1698, 12380), (1857, 11320), (2264, 9285), (2476, 8490), (2830, 7428), (3095, 6792), (3396, 6190), (3714, 5660), (4245, 4952)]