641550280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{31387}}^1$

素因数の和:31478

約数の個数: 64

約数和(自身を含む): 1672352640

約数和(自身を除く): 1030802360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 4088, 5110, 10220, 20440, 31387, 62774, 125548, 156935, 219709, 251096, 313870, 439418, 627740, 878836, 1098545, 1255480, 1757672, 2197090, 2291251, 4394180, 4582502, 8788360, 9165004, 11456255, 16038757, 18330008, 22912510, 32077514, 45825020, 64155028, 80193785, 91650040, 128310056, 160387570, 320775140, 641550280]

約数ペア:

[(1, 641550280), (2, 320775140), (4, 160387570), (5, 128310056), (7, 91650040), (8, 80193785), (10, 64155028), (14, 45825020), (20, 32077514), (28, 22912510), (35, 18330008), (40, 16038757), (56, 11456255), (70, 9165004), (73, 8788360), (140, 4582502), (146, 4394180), (280, 2291251), (292, 2197090), (365, 1757672), (511, 1255480), (584, 1098545), (730, 878836), (1022, 627740), (1460, 439418), (2044, 313870), (2555, 251096), (2920, 219709), (4088, 156935), (5110, 125548), (10220, 62774), (20440, 31387)]