90447640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:604

約数の個数: 64

約数和(自身を含む): 210561120

約数和(自身を除く): 120113480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 131, 164, 205, 262, 328, 410, 421, 524, 655, 820, 842, 1048, 1310, 1640, 1684, 2105, 2620, 3368, 4210, 5240, 5371, 8420, 10742, 16840, 17261, 21484, 26855, 34522, 42968, 53710, 55151, 69044, 86305, 107420, 110302, 138088, 172610, 214840, 220604, 275755, 345220, 441208, 551510, 690440, 1103020, 2206040, 2261191, 4522382, 9044764, 11305955, 18089528, 22611910, 45223820, 90447640]

約数ペア:

[(1, 90447640), (2, 45223820), (4, 22611910), (5, 18089528), (8, 11305955), (10, 9044764), (20, 4522382), (40, 2261191), (41, 2206040), (82, 1103020), (131, 690440), (164, 551510), (205, 441208), (262, 345220), (328, 275755), (410, 220604), (421, 214840), (524, 172610), (655, 138088), (820, 110302), (842, 107420), (1048, 86305), (1310, 69044), (1640, 55151), (1684, 53710), (2105, 42968), (2620, 34522), (3368, 26855), (4210, 21484), (5240, 17261), (5371, 16840), (8420, 10742)]