78312220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1409}}^1$

素因数の和:1822

約数の個数: 48

約数和(自身を含む): 188556480

約数和(自身を除く): 110244260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 397, 794, 1409, 1588, 1985, 2779, 2818, 3970, 5558, 5636, 7045, 7940, 9863, 11116, 13895, 14090, 19726, 27790, 28180, 39452, 49315, 55580, 98630, 197260, 559373, 1118746, 2237492, 2796865, 3915611, 5593730, 7831222, 11187460, 15662444, 19578055, 39156110, 78312220]

約数ペア:

[(1, 78312220), (2, 39156110), (4, 19578055), (5, 15662444), (7, 11187460), (10, 7831222), (14, 5593730), (20, 3915611), (28, 2796865), (35, 2237492), (70, 1118746), (140, 559373), (397, 197260), (794, 98630), (1409, 55580), (1588, 49315), (1985, 39452), (2779, 28180), (2818, 27790), (3970, 19726), (5558, 14090), (5636, 13895), (7045, 11116), (7940, 9863)]