8237840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^2$

素因数の和:204

約数の個数: 60

約数和(自身を含む): 20860644

約数和(自身を除く): 12622804

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 89, 104, 130, 178, 208, 260, 356, 445, 520, 712, 890, 1040, 1157, 1424, 1780, 2314, 3560, 4628, 5785, 7120, 7921, 9256, 11570, 15842, 18512, 23140, 31684, 39605, 46280, 63368, 79210, 92560, 102973, 126736, 158420, 205946, 316840, 411892, 514865, 633680, 823784, 1029730, 1647568, 2059460, 4118920, 8237840]

約数ペア:

[(1, 8237840), (2, 4118920), (4, 2059460), (5, 1647568), (8, 1029730), (10, 823784), (13, 633680), (16, 514865), (20, 411892), (26, 316840), (40, 205946), (52, 158420), (65, 126736), (80, 102973), (89, 92560), (104, 79210), (130, 63368), (178, 46280), (208, 39605), (260, 31684), (356, 23140), (445, 18512), (520, 15842), (712, 11570), (890, 9256), (1040, 7921), (1157, 7120), (1424, 5785), (1780, 4628), (2314, 3560)]