20854920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10223}}^1$

素因数の和:10254

約数の個数: 64

約数和(自身を含む): 66251520

約数和(自身を除く): 45396600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10223, 20446, 30669, 40892, 51115, 61338, 81784, 102230, 122676, 153345, 173791, 204460, 245352, 306690, 347582, 408920, 521373, 613380, 695164, 868955, 1042746, 1226760, 1390328, 1737910, 2085492, 2606865, 3475820, 4170984, 5213730, 6951640, 10427460, 20854920]

約数ペア:

[(1, 20854920), (2, 10427460), (3, 6951640), (4, 5213730), (5, 4170984), (6, 3475820), (8, 2606865), (10, 2085492), (12, 1737910), (15, 1390328), (17, 1226760), (20, 1042746), (24, 868955), (30, 695164), (34, 613380), (40, 521373), (51, 408920), (60, 347582), (68, 306690), (85, 245352), (102, 204460), (120, 173791), (136, 153345), (170, 122676), (204, 102230), (255, 81784), (340, 61338), (408, 51115), (510, 40892), (680, 30669), (1020, 20446), (2040, 10223)]