20768020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11411}}^1$

素因数の和:11440

約数の個数: 48

約数和(自身を含む): 53682048

約数和(自身を除く): 32914028

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11411, 22822, 45644, 57055, 79877, 114110, 148343, 159754, 228220, 296686, 319508, 399385, 593372, 741715, 798770, 1038401, 1483430, 1597540, 2076802, 2966860, 4153604, 5192005, 10384010, 20768020]

約数ペア:

[(1, 20768020), (2, 10384010), (4, 5192005), (5, 4153604), (7, 2966860), (10, 2076802), (13, 1597540), (14, 1483430), (20, 1038401), (26, 798770), (28, 741715), (35, 593372), (52, 399385), (65, 319508), (70, 296686), (91, 228220), (130, 159754), (140, 148343), (182, 114110), (260, 79877), (364, 57055), (455, 45644), (910, 22822), (1820, 11411)]