20420556

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{587}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 51631104

約数和(自身を除く): 31210548

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 223, 446, 587, 669, 892, 1174, 1338, 1761, 2348, 2676, 2899, 3522, 5798, 7044, 7631, 8697, 11596, 15262, 17394, 22893, 30524, 34788, 45786, 91572, 130901, 261802, 392703, 523604, 785406, 1570812, 1701713, 3403426, 5105139, 6806852, 10210278, 20420556]

約数ペア:

[(1, 20420556), (2, 10210278), (3, 6806852), (4, 5105139), (6, 3403426), (12, 1701713), (13, 1570812), (26, 785406), (39, 523604), (52, 392703), (78, 261802), (156, 130901), (223, 91572), (446, 45786), (587, 34788), (669, 30524), (892, 22893), (1174, 17394), (1338, 15262), (1761, 11596), (2348, 8697), (2676, 7631), (2899, 7044), (3522, 5798)]