81075380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{613}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 181031760

約数和(自身を除く): 99956380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 389, 613, 778, 1226, 1556, 1945, 2452, 3065, 3890, 6130, 6613, 7780, 10421, 12260, 13226, 20842, 26452, 33065, 41684, 52105, 66130, 104210, 132260, 208420, 238457, 476914, 953828, 1192285, 2384570, 4053769, 4769140, 8107538, 16215076, 20268845, 40537690, 81075380]

約数ペア:

[(1, 81075380), (2, 40537690), (4, 20268845), (5, 16215076), (10, 8107538), (17, 4769140), (20, 4053769), (34, 2384570), (68, 1192285), (85, 953828), (170, 476914), (340, 238457), (389, 208420), (613, 132260), (778, 104210), (1226, 66130), (1556, 52105), (1945, 41684), (2452, 33065), (3065, 26452), (3890, 20842), (6130, 13226), (6613, 12260), (7780, 10421)]