51612640

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1621}}^1$

素因数の和:1835

約数の個数: 48

約数和(自身を含む): 122623200

約数和(自身を除く): 71010560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1621, 1990, 3184, 3242, 3980, 6368, 6484, 7960, 8105, 12968, 15920, 16210, 25936, 31840, 32420, 51872, 64840, 129680, 259360, 322579, 645158, 1290316, 1612895, 2580632, 3225790, 5161264, 6451580, 10322528, 12903160, 25806320, 51612640]

約数ペア:

[(1, 51612640), (2, 25806320), (4, 12903160), (5, 10322528), (8, 6451580), (10, 5161264), (16, 3225790), (20, 2580632), (32, 1612895), (40, 1290316), (80, 645158), (160, 322579), (199, 259360), (398, 129680), (796, 64840), (995, 51872), (1592, 32420), (1621, 31840), (1990, 25936), (3184, 16210), (3242, 15920), (3980, 12968), (6368, 8105), (6484, 7960)]