21265816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{641}}^1$

素因数の和:700

約数の個数: 64

約数和(自身を含む): 48535200

約数和(自身を除く): 27269384

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 29, 44, 52, 58, 88, 104, 116, 143, 232, 286, 319, 377, 572, 638, 641, 754, 1144, 1276, 1282, 1508, 2552, 2564, 3016, 4147, 5128, 7051, 8294, 8333, 14102, 16588, 16666, 18589, 28204, 33176, 33332, 37178, 56408, 66664, 74356, 91663, 148712, 183326, 204479, 241657, 366652, 408958, 483314, 733304, 817916, 966628, 1635832, 1933256, 2658227, 5316454, 10632908, 21265816]

約数ペア:

[(1, 21265816), (2, 10632908), (4, 5316454), (8, 2658227), (11, 1933256), (13, 1635832), (22, 966628), (26, 817916), (29, 733304), (44, 483314), (52, 408958), (58, 366652), (88, 241657), (104, 204479), (116, 183326), (143, 148712), (232, 91663), (286, 74356), (319, 66664), (377, 56408), (572, 37178), (638, 33332), (641, 33176), (754, 28204), (1144, 18589), (1276, 16666), (1282, 16588), (1508, 14102), (2552, 8333), (2564, 8294), (3016, 7051), (4147, 5128)]