31389880

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{5197}}^1$

素因数の和:5359

約数の個数: 32

約数和(自身を含む): 71108640

約数和(自身を除く): 39718760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 5197, 6040, 10394, 20788, 25985, 41576, 51970, 103940, 207880, 784747, 1569494, 3138988, 3923735, 6277976, 7847470, 15694940, 31389880]

約数ペア:

[(1, 31389880), (2, 15694940), (4, 7847470), (5, 6277976), (8, 3923735), (10, 3138988), (20, 1569494), (40, 784747), (151, 207880), (302, 103940), (604, 51970), (755, 41576), (1208, 25985), (1510, 20788), (3020, 10394), (5197, 6040)]