31490420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3907}}^1$

素因数の和:3960

約数の個数: 48

約数和(自身を含む): 73532928

約数和(自身を除く): 42042508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 3907, 4030, 7814, 8060, 15628, 19535, 39070, 50791, 78140, 101582, 121117, 203164, 242234, 253955, 484468, 507910, 605585, 1015820, 1211170, 1574521, 2422340, 3149042, 6298084, 7872605, 15745210, 31490420]

約数ペア:

[(1, 31490420), (2, 15745210), (4, 7872605), (5, 6298084), (10, 3149042), (13, 2422340), (20, 1574521), (26, 1211170), (31, 1015820), (52, 605585), (62, 507910), (65, 484468), (124, 253955), (130, 242234), (155, 203164), (260, 121117), (310, 101582), (403, 78140), (620, 50791), (806, 39070), (1612, 19535), (2015, 15628), (3907, 8060), (4030, 7814)]