20669960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{269}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 49863600

約数和(自身を除く): 29193640

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 113, 136, 170, 226, 269, 340, 452, 538, 565, 680, 904, 1076, 1130, 1345, 1921, 2152, 2260, 2690, 3842, 4520, 4573, 5380, 7684, 9146, 9605, 10760, 15368, 18292, 19210, 22865, 30397, 36584, 38420, 45730, 60794, 76840, 91460, 121588, 151985, 182920, 243176, 303970, 516749, 607940, 1033498, 1215880, 2066996, 2583745, 4133992, 5167490, 10334980, 20669960]

約数ペア:

[(1, 20669960), (2, 10334980), (4, 5167490), (5, 4133992), (8, 2583745), (10, 2066996), (17, 1215880), (20, 1033498), (34, 607940), (40, 516749), (68, 303970), (85, 243176), (113, 182920), (136, 151985), (170, 121588), (226, 91460), (269, 76840), (340, 60794), (452, 45730), (538, 38420), (565, 36584), (680, 30397), (904, 22865), (1076, 19210), (1130, 18292), (1345, 15368), (1921, 10760), (2152, 9605), (2260, 9146), (2690, 7684), (3842, 5380), (4520, 4573)]