8218640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5407}}^1$

素因数の和:5439

約数の個数: 40

約数和(自身を含む): 20117760

約数和(自身を除く): 11899120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 5407, 10814, 21628, 27035, 43256, 54070, 86512, 102733, 108140, 205466, 216280, 410932, 432560, 513665, 821864, 1027330, 1643728, 2054660, 4109320, 8218640]

約数ペア:

[(1, 8218640), (2, 4109320), (4, 2054660), (5, 1643728), (8, 1027330), (10, 821864), (16, 513665), (19, 432560), (20, 410932), (38, 216280), (40, 205466), (76, 108140), (80, 102733), (95, 86512), (152, 54070), (190, 43256), (304, 27035), (380, 21628), (760, 10814), (1520, 5407)]