17820985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{739}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 9032135

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 739, 1855, 3445, 3695, 4823, 5173, 9607, 24115, 25865, 39167, 48035, 67249, 195835, 274169, 336245, 509171, 1370845, 2545855, 3564197, 17820985]

約数ペア:

[(1, 17820985), (5, 3564197), (7, 2545855), (13, 1370845), (35, 509171), (53, 336245), (65, 274169), (91, 195835), (265, 67249), (371, 48035), (455, 39167), (689, 25865), (739, 24115), (1855, 9607), (3445, 5173), (3695, 4823)]