20697985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1453}}^1$

素因数の和:1513

約数の個数: 32

約数和(自身を含む): 31825152

約数和(自身を除く): 11127167

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 1295, 1453, 2035, 2849, 7265, 10171, 14245, 15983, 50855, 53761, 79915, 111881, 268805, 376327, 559405, 591371, 1881635, 2956855, 4139597, 20697985]

約数ペア:

[(1, 20697985), (5, 4139597), (7, 2956855), (11, 1881635), (35, 591371), (37, 559405), (55, 376327), (77, 268805), (185, 111881), (259, 79915), (385, 53761), (407, 50855), (1295, 15983), (1453, 14245), (2035, 10171), (2849, 7265)]