20900285

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{593}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 9892675

約数列:

[1, 5, 7, 19, 35, 53, 95, 133, 265, 371, 593, 665, 1007, 1855, 2965, 4151, 5035, 7049, 11267, 20755, 31429, 35245, 56335, 78869, 157145, 220003, 394345, 597151, 1100015, 2985755, 4180057, 20900285]

約数ペア:

[(1, 20900285), (5, 4180057), (7, 2985755), (19, 1100015), (35, 597151), (53, 394345), (95, 220003), (133, 157145), (265, 78869), (371, 56335), (593, 35245), (665, 31429), (1007, 20755), (1855, 11267), (2965, 7049), (4151, 5035)]