31021880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{569}}^1$

素因数の和:656

約数の個数: 64

約数和(自身を含む): 73872000

約数和(自身を除く): 42850120

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 47, 58, 94, 116, 145, 188, 232, 235, 290, 376, 470, 569, 580, 940, 1138, 1160, 1363, 1880, 2276, 2726, 2845, 4552, 5452, 5690, 6815, 10904, 11380, 13630, 16501, 22760, 26743, 27260, 33002, 53486, 54520, 66004, 82505, 106972, 132008, 133715, 165010, 213944, 267430, 330020, 534860, 660040, 775547, 1069720, 1551094, 3102188, 3877735, 6204376, 7755470, 15510940, 31021880]

約数ペア:

[(1, 31021880), (2, 15510940), (4, 7755470), (5, 6204376), (8, 3877735), (10, 3102188), (20, 1551094), (29, 1069720), (40, 775547), (47, 660040), (58, 534860), (94, 330020), (116, 267430), (145, 213944), (188, 165010), (232, 133715), (235, 132008), (290, 106972), (376, 82505), (470, 66004), (569, 54520), (580, 53486), (940, 33002), (1138, 27260), (1160, 26743), (1363, 22760), (1880, 16501), (2276, 13630), (2726, 11380), (2845, 10904), (4552, 6815), (5452, 5690)]