28081960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 68098320

約数和(自身を除く): 40016360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 61, 68, 85, 122, 136, 170, 244, 305, 340, 488, 610, 677, 680, 1037, 1220, 1354, 2074, 2440, 2708, 3385, 4148, 5185, 5416, 6770, 8296, 10370, 11509, 13540, 20740, 23018, 27080, 41297, 41480, 46036, 57545, 82594, 92072, 115090, 165188, 206485, 230180, 330376, 412970, 460360, 702049, 825940, 1404098, 1651880, 2808196, 3510245, 5616392, 7020490, 14040980, 28081960]

約数ペア:

[(1, 28081960), (2, 14040980), (4, 7020490), (5, 5616392), (8, 3510245), (10, 2808196), (17, 1651880), (20, 1404098), (34, 825940), (40, 702049), (61, 460360), (68, 412970), (85, 330376), (122, 230180), (136, 206485), (170, 165188), (244, 115090), (305, 92072), (340, 82594), (488, 57545), (610, 46036), (677, 41480), (680, 41297), (1037, 27080), (1220, 23018), (1354, 20740), (2074, 13540), (2440, 11509), (2708, 10370), (3385, 8296), (4148, 6770), (5185, 5416)]