90389680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{66463}}^1$

素因数の和:66493

約数の個数: 40

約数和(自身を含む): 222521472

約数和(自身を除く): 132131792

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 66463, 132926, 265852, 332315, 531704, 664630, 1063408, 1129871, 1329260, 2259742, 2658520, 4519484, 5317040, 5649355, 9038968, 11298710, 18077936, 22597420, 45194840, 90389680]

約数ペア:

[(1, 90389680), (2, 45194840), (4, 22597420), (5, 18077936), (8, 11298710), (10, 9038968), (16, 5649355), (17, 5317040), (20, 4519484), (34, 2658520), (40, 2259742), (68, 1329260), (80, 1129871), (85, 1063408), (136, 664630), (170, 531704), (272, 332315), (340, 265852), (680, 132926), (1360, 66463)]