28302380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 61931520

約数和(自身を除く): 33629140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 191, 239, 310, 382, 478, 620, 764, 955, 956, 1195, 1910, 2390, 3820, 4780, 5921, 7409, 11842, 14818, 23684, 29605, 29636, 37045, 45649, 59210, 74090, 91298, 118420, 148180, 182596, 228245, 456490, 912980, 1415119, 2830238, 5660476, 7075595, 14151190, 28302380]

約数ペア:

[(1, 28302380), (2, 14151190), (4, 7075595), (5, 5660476), (10, 2830238), (20, 1415119), (31, 912980), (62, 456490), (124, 228245), (155, 182596), (191, 148180), (239, 118420), (310, 91298), (382, 74090), (478, 59210), (620, 45649), (764, 37045), (955, 29636), (956, 29605), (1195, 23684), (1910, 14818), (2390, 11842), (3820, 7409), (4780, 5921)]