1288940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{223}}^1$

素因数の和:266

約数の個数: 36

約数和(自身を含む): 2888256

約数和(自身を除く): 1599316

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 223, 289, 340, 446, 578, 892, 1115, 1156, 1445, 2230, 2890, 3791, 4460, 5780, 7582, 15164, 18955, 37910, 64447, 75820, 128894, 257788, 322235, 644470, 1288940]

約数ペア:

[(1, 1288940), (2, 644470), (4, 322235), (5, 257788), (10, 128894), (17, 75820), (20, 64447), (34, 37910), (68, 18955), (85, 15164), (170, 7582), (223, 5780), (289, 4460), (340, 3791), (446, 2890), (578, 2230), (892, 1445), (1115, 1156)]