31311340

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 67858560

約数和(自身を除く): 36547220

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 109, 212, 218, 265, 271, 436, 530, 542, 545, 1060, 1084, 1090, 1355, 2180, 2710, 5420, 5777, 11554, 14363, 23108, 28726, 28885, 29539, 57452, 57770, 59078, 71815, 115540, 118156, 143630, 147695, 287260, 295390, 590780, 1565567, 3131134, 6262268, 7827835, 15655670, 31311340]

約数ペア:

[(1, 31311340), (2, 15655670), (4, 7827835), (5, 6262268), (10, 3131134), (20, 1565567), (53, 590780), (106, 295390), (109, 287260), (212, 147695), (218, 143630), (265, 118156), (271, 115540), (436, 71815), (530, 59078), (542, 57770), (545, 57452), (1060, 29539), (1084, 28885), (1090, 28726), (1355, 23108), (2180, 14363), (2710, 11554), (5420, 5777)]