82781180

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1\times {\mathrm{379}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 177985920

約数和(自身を除く): 95204740

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 163, 268, 326, 335, 379, 652, 670, 758, 815, 1340, 1516, 1630, 1895, 3260, 3790, 7580, 10921, 21842, 25393, 43684, 50786, 54605, 61777, 101572, 109210, 123554, 126965, 218420, 247108, 253930, 308885, 507860, 617770, 1235540, 4139059, 8278118, 16556236, 20695295, 41390590, 82781180]

約数ペア:

[(1, 82781180), (2, 41390590), (4, 20695295), (5, 16556236), (10, 8278118), (20, 4139059), (67, 1235540), (134, 617770), (163, 507860), (268, 308885), (326, 253930), (335, 247108), (379, 218420), (652, 126965), (670, 123554), (758, 109210), (815, 101572), (1340, 61777), (1516, 54605), (1630, 50786), (1895, 43684), (3260, 25393), (3790, 21842), (7580, 10921)]