20235280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19457}}^1$

素因数の和:19483

約数の個数: 40

約数和(自身を含む): 50668632

約数和(自身を除く): 30433352

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19457, 38914, 77828, 97285, 155656, 194570, 252941, 311312, 389140, 505882, 778280, 1011764, 1264705, 1556560, 2023528, 2529410, 4047056, 5058820, 10117640, 20235280]

約数ペア:

[(1, 20235280), (2, 10117640), (4, 5058820), (5, 4047056), (8, 2529410), (10, 2023528), (13, 1556560), (16, 1264705), (20, 1011764), (26, 778280), (40, 505882), (52, 389140), (65, 311312), (80, 252941), (104, 194570), (130, 155656), (208, 97285), (260, 77828), (520, 38914), (1040, 19457)]