79720400

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4861}}^1$

素因数の和:4920

約数の個数: 60

約数和(自身を含む): 196240044

約数和(自身を除く): 116519644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1640, 2050, 3280, 4100, 4861, 8200, 9722, 16400, 19444, 24305, 38888, 48610, 77776, 97220, 121525, 194440, 199301, 243050, 388880, 398602, 486100, 797204, 972200, 996505, 1594408, 1944400, 1993010, 3188816, 3986020, 4982525, 7972040, 9965050, 15944080, 19930100, 39860200, 79720400]

約数ペア:

[(1, 79720400), (2, 39860200), (4, 19930100), (5, 15944080), (8, 9965050), (10, 7972040), (16, 4982525), (20, 3986020), (25, 3188816), (40, 1993010), (41, 1944400), (50, 1594408), (80, 996505), (82, 972200), (100, 797204), (164, 486100), (200, 398602), (205, 388880), (328, 243050), (400, 199301), (410, 194440), (656, 121525), (820, 97220), (1025, 77776), (1640, 48610), (2050, 38888), (3280, 24305), (4100, 19444), (4861, 16400), (8200, 9722)]