20780072

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{136711}}^1$

素因数の和:136736

約数の個数: 16

約数和(自身を含む): 41013600

約数和(自身を除く): 20233528

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 136711, 273422, 546844, 1093688, 2597509, 5195018, 10390036, 20780072]

約数ペア:

[(1, 20780072), (2, 10390036), (4, 5195018), (8, 2597509), (19, 1093688), (38, 546844), (76, 273422), (152, 136711)]