21103256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155171}}^1$

素因数の和:155194

約数の個数: 16

約数和(自身を含む): 41896440

約数和(自身を除く): 20793184

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155171, 310342, 620684, 1241368, 2637907, 5275814, 10551628, 21103256]

約数ペア:

[(1, 21103256), (2, 10551628), (4, 5275814), (8, 2637907), (17, 1241368), (34, 620684), (68, 310342), (136, 155171)]