20841756

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 54109440

約数和(自身を除く): 33267684

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 169, 172, 239, 258, 338, 478, 507, 516, 559, 676, 717, 956, 1014, 1118, 1434, 1677, 2028, 2236, 2868, 3107, 3354, 6214, 6708, 7267, 9321, 10277, 12428, 14534, 18642, 20554, 21801, 29068, 30831, 37284, 40391, 41108, 43602, 61662, 80782, 87204, 121173, 123324, 133601, 161564, 242346, 267202, 400803, 484692, 534404, 801606, 1603212, 1736813, 3473626, 5210439, 6947252, 10420878, 20841756]

約数ペア:

[(1, 20841756), (2, 10420878), (3, 6947252), (4, 5210439), (6, 3473626), (12, 1736813), (13, 1603212), (26, 801606), (39, 534404), (43, 484692), (52, 400803), (78, 267202), (86, 242346), (129, 161564), (156, 133601), (169, 123324), (172, 121173), (239, 87204), (258, 80782), (338, 61662), (478, 43602), (507, 41108), (516, 40391), (559, 37284), (676, 30831), (717, 29068), (956, 21801), (1014, 20554), (1118, 18642), (1434, 14534), (1677, 12428), (2028, 10277), (2236, 9321), (2868, 7267), (3107, 6708), (3354, 6214)]