157480720

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{4909}}^1$

素因数の和:5323

約数の個数: 40

約数和(自身を含む): 367130520

約数和(自身を除く): 209649800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 1604, 2005, 3208, 4010, 4909, 6416, 8020, 9818, 16040, 19636, 24545, 32080, 39272, 49090, 78544, 98180, 196360, 392720, 1968509, 3937018, 7874036, 9842545, 15748072, 19685090, 31496144, 39370180, 78740360, 157480720]

約数ペア:

[(1, 157480720), (2, 78740360), (4, 39370180), (5, 31496144), (8, 19685090), (10, 15748072), (16, 9842545), (20, 7874036), (40, 3937018), (80, 1968509), (401, 392720), (802, 196360), (1604, 98180), (2005, 78544), (3208, 49090), (4010, 39272), (4909, 32080), (6416, 24545), (8020, 19636), (9818, 16040)]