20787960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1619}}^1$

素因数の和:1740

約数の個数: 64

約数和(自身を含む): 62985600

約数和(自身を除く): 42197640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1605, 1619, 2140, 2568, 3210, 3238, 4280, 4857, 6420, 6476, 8095, 9714, 12840, 12952, 16190, 19428, 24285, 32380, 38856, 48570, 64760, 97140, 173233, 194280, 346466, 519699, 692932, 866165, 1039398, 1385864, 1732330, 2078796, 2598495, 3464660, 4157592, 5196990, 6929320, 10393980, 20787960]

約数ペア:

[(1, 20787960), (2, 10393980), (3, 6929320), (4, 5196990), (5, 4157592), (6, 3464660), (8, 2598495), (10, 2078796), (12, 1732330), (15, 1385864), (20, 1039398), (24, 866165), (30, 692932), (40, 519699), (60, 346466), (107, 194280), (120, 173233), (214, 97140), (321, 64760), (428, 48570), (535, 38856), (642, 32380), (856, 24285), (1070, 19428), (1284, 16190), (1605, 12952), (1619, 12840), (2140, 9714), (2568, 8095), (3210, 6476), (3238, 6420), (4280, 4857)]