21218520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1171}}^1$

素因数の和:1336

約数の個数: 64

約数和(自身を含む): 64131840

約数和(自身を除く): 42913320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 151, 302, 453, 604, 755, 906, 1171, 1208, 1510, 1812, 2265, 2342, 3020, 3513, 3624, 4530, 4684, 5855, 6040, 7026, 9060, 9368, 11710, 14052, 17565, 18120, 23420, 28104, 35130, 46840, 70260, 140520, 176821, 353642, 530463, 707284, 884105, 1060926, 1414568, 1768210, 2121852, 2652315, 3536420, 4243704, 5304630, 7072840, 10609260, 21218520]

約数ペア:

[(1, 21218520), (2, 10609260), (3, 7072840), (4, 5304630), (5, 4243704), (6, 3536420), (8, 2652315), (10, 2121852), (12, 1768210), (15, 1414568), (20, 1060926), (24, 884105), (30, 707284), (40, 530463), (60, 353642), (120, 176821), (151, 140520), (302, 70260), (453, 46840), (604, 35130), (755, 28104), (906, 23420), (1171, 18120), (1208, 17565), (1510, 14052), (1812, 11710), (2265, 9368), (2342, 9060), (3020, 7026), (3513, 6040), (3624, 5855), (4530, 4684)]