81095380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{941}}^1$

素因数の和:1120

約数の個数: 48

約数和(自身を含む): 177246720

約数和(自身を除く): 96151340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 139, 155, 278, 310, 556, 620, 695, 941, 1390, 1882, 2780, 3764, 4309, 4705, 8618, 9410, 17236, 18820, 21545, 29171, 43090, 58342, 86180, 116684, 130799, 145855, 261598, 291710, 523196, 583420, 653995, 1307990, 2615980, 4054769, 8109538, 16219076, 20273845, 40547690, 81095380]

約数ペア:

[(1, 81095380), (2, 40547690), (4, 20273845), (5, 16219076), (10, 8109538), (20, 4054769), (31, 2615980), (62, 1307990), (124, 653995), (139, 583420), (155, 523196), (278, 291710), (310, 261598), (556, 145855), (620, 130799), (695, 116684), (941, 86180), (1390, 58342), (1882, 43090), (2780, 29171), (3764, 21545), (4309, 18820), (4705, 17236), (8618, 9410)]