31517840

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4987}}^1$

素因数の和:5079

約数の個数: 40

約数和(自身を含む): 74221440

約数和(自身を除く): 42703600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4987, 6320, 9974, 19948, 24935, 39896, 49870, 79792, 99740, 199480, 393973, 398960, 787946, 1575892, 1969865, 3151784, 3939730, 6303568, 7879460, 15758920, 31517840]

約数ペア:

[(1, 31517840), (2, 15758920), (4, 7879460), (5, 6303568), (8, 3939730), (10, 3151784), (16, 1969865), (20, 1575892), (40, 787946), (79, 398960), (80, 393973), (158, 199480), (316, 99740), (395, 79792), (632, 49870), (790, 39896), (1264, 24935), (1580, 19948), (3160, 9974), (4987, 6320)]