21490312

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{158017}}^1$

素因数の和:158040

約数の個数: 16

約数和(自身を含む): 42664860

約数和(自身を除く): 21174548

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 158017, 316034, 632068, 1264136, 2686289, 5372578, 10745156, 21490312]

約数ペア:

[(1, 21490312), (2, 10745156), (4, 5372578), (8, 2686289), (17, 1264136), (34, 632068), (68, 316034), (136, 158017)]