20702668

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 47996928

約数和(自身を除く): 27294260

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 31, 34, 46, 61, 62, 68, 92, 119, 122, 124, 161, 217, 238, 244, 322, 391, 427, 434, 476, 527, 644, 713, 782, 854, 868, 1037, 1054, 1403, 1426, 1564, 1708, 1891, 2074, 2108, 2737, 2806, 2852, 3689, 3782, 4148, 4991, 5474, 5612, 7259, 7378, 7564, 9821, 9982, 10948, 12121, 13237, 14518, 14756, 19642, 19964, 23851, 24242, 26474, 29036, 32147, 39284, 43493, 47702, 48484, 52948, 64294, 84847, 86986, 95404, 128588, 166957, 169694, 173972, 225029, 304451, 333914, 339388, 450058, 608902, 667828, 739381, 900116, 1217804, 1478762, 2957524, 5175667, 10351334, 20702668]

約数ペア:

[(1, 20702668), (2, 10351334), (4, 5175667), (7, 2957524), (14, 1478762), (17, 1217804), (23, 900116), (28, 739381), (31, 667828), (34, 608902), (46, 450058), (61, 339388), (62, 333914), (68, 304451), (92, 225029), (119, 173972), (122, 169694), (124, 166957), (161, 128588), (217, 95404), (238, 86986), (244, 84847), (322, 64294), (391, 52948), (427, 48484), (434, 47702), (476, 43493), (527, 39284), (644, 32147), (713, 29036), (782, 26474), (854, 24242), (868, 23851), (1037, 19964), (1054, 19642), (1403, 14756), (1426, 14518), (1564, 13237), (1708, 12121), (1891, 10948), (2074, 9982), (2108, 9821), (2737, 7564), (2806, 7378), (2852, 7259), (3689, 5612), (3782, 5474), (4148, 4991)]