20960355

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2287}}^1$

素因数の和:2355

約数の個数: 32

約数和(自身を含む): 36900864

約数和(自身を除く): 15940509

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 195, 235, 611, 705, 1833, 2287, 3055, 6861, 9165, 11435, 29731, 34305, 89193, 107489, 148655, 322467, 445965, 537445, 1397357, 1612335, 4192071, 6986785, 20960355]

約数ペア:

[(1, 20960355), (3, 6986785), (5, 4192071), (13, 1612335), (15, 1397357), (39, 537445), (47, 445965), (65, 322467), (141, 148655), (195, 107489), (235, 89193), (611, 34305), (705, 29731), (1833, 11435), (2287, 9165), (3055, 6861)]