20941544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3301}}^1$

素因数の和:3381

約数の個数: 32

約数和(自身を含む): 42992040

約数和(自身を除く): 22050496

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3301, 6344, 6602, 13204, 26408, 42913, 85826, 171652, 201361, 343304, 402722, 805444, 1610888, 2617693, 5235386, 10470772, 20941544]

約数ペア:

[(1, 20941544), (2, 10470772), (4, 5235386), (8, 2617693), (13, 1610888), (26, 805444), (52, 402722), (61, 343304), (104, 201361), (122, 171652), (244, 85826), (488, 42913), (793, 26408), (1586, 13204), (3172, 6602), (3301, 6344)]