78788740

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1\times {\mathrm{311}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 169827840

約数和(自身を除く): 91039100

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 239, 265, 311, 478, 530, 622, 956, 1060, 1195, 1244, 1555, 2390, 3110, 4780, 6220, 12667, 16483, 25334, 32966, 50668, 63335, 65932, 74329, 82415, 126670, 148658, 164830, 253340, 297316, 329660, 371645, 743290, 1486580, 3939437, 7878874, 15757748, 19697185, 39394370, 78788740]

約数ペア:

[(1, 78788740), (2, 39394370), (4, 19697185), (5, 15757748), (10, 7878874), (20, 3939437), (53, 1486580), (106, 743290), (212, 371645), (239, 329660), (265, 297316), (311, 253340), (478, 164830), (530, 148658), (622, 126670), (956, 82415), (1060, 74329), (1195, 65932), (1244, 63335), (1555, 50668), (2390, 32966), (3110, 25334), (4780, 16483), (6220, 12667)]