20255710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:257

約数の個数: 48

約数和(自身を含む): 39940992

約数和(自身を除く): 19685282

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 181, 190, 310, 361, 362, 589, 722, 905, 1178, 1805, 1810, 2945, 3439, 3610, 5611, 5890, 6878, 11191, 11222, 17195, 22382, 28055, 34390, 55955, 56110, 65341, 106609, 111910, 130682, 213218, 326705, 533045, 653410, 1066090, 2025571, 4051142, 10127855, 20255710]

約数ペア:

[(1, 20255710), (2, 10127855), (5, 4051142), (10, 2025571), (19, 1066090), (31, 653410), (38, 533045), (62, 326705), (95, 213218), (155, 130682), (181, 111910), (190, 106609), (310, 65341), (361, 56110), (362, 55955), (589, 34390), (722, 28055), (905, 22382), (1178, 17195), (1805, 11222), (1810, 11191), (2945, 6878), (3439, 5890), (3610, 5611)]