20277705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{617}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 37257984

約数和(自身を除く): 16980279

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 313, 617, 939, 1565, 1851, 2191, 3085, 4319, 4695, 6573, 9255, 10955, 12957, 21595, 32865, 64785, 193121, 579363, 965605, 1351847, 2896815, 4055541, 6759235, 20277705]

約数ペア:

[(1, 20277705), (3, 6759235), (5, 4055541), (7, 2896815), (15, 1351847), (21, 965605), (35, 579363), (105, 193121), (313, 64785), (617, 32865), (939, 21595), (1565, 12957), (1851, 10955), (2191, 9255), (3085, 6573), (4319, 4695)]