21318760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28051}}^1$

素因数の和:28081

約数の個数: 32

約数和(自身を含む): 50493600

約数和(自身を除く): 29174840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28051, 56102, 112204, 140255, 224408, 280510, 532969, 561020, 1065938, 1122040, 2131876, 2664845, 4263752, 5329690, 10659380, 21318760]

約数ペア:

[(1, 21318760), (2, 10659380), (4, 5329690), (5, 4263752), (8, 2664845), (10, 2131876), (19, 1122040), (20, 1065938), (38, 561020), (40, 532969), (76, 280510), (95, 224408), (152, 140255), (190, 112204), (380, 56102), (760, 28051)]