21045160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27691}}^1$

素因数の和:27721

約数の個数: 32

約数和(自身を含む): 49845600

約数和(自身を除く): 28800440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27691, 55382, 110764, 138455, 221528, 276910, 526129, 553820, 1052258, 1107640, 2104516, 2630645, 4209032, 5261290, 10522580, 21045160]

約数ペア:

[(1, 21045160), (2, 10522580), (4, 5261290), (5, 4209032), (8, 2630645), (10, 2104516), (19, 1107640), (20, 1052258), (38, 553820), (40, 526129), (76, 276910), (95, 221528), (152, 138455), (190, 110764), (380, 55382), (760, 27691)]