21559605

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{577}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 35956224

約数和(自身を除く): 14396619

約数列:

[1, 3, 5, 15, 47, 53, 141, 159, 235, 265, 577, 705, 795, 1731, 2491, 2885, 7473, 8655, 12455, 27119, 30581, 37365, 81357, 91743, 135595, 152905, 406785, 458715, 1437307, 4311921, 7186535, 21559605]

約数ペア:

[(1, 21559605), (3, 7186535), (5, 4311921), (15, 1437307), (47, 458715), (53, 406785), (141, 152905), (159, 135595), (235, 91743), (265, 81357), (577, 37365), (705, 30581), (795, 27119), (1731, 12455), (2491, 8655), (2885, 7473)]