21781828

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{733}}^1$

素因数の和:796

約数の個数: 48

約数和(自身を含む): 44392320

約数和(自身を除く): 22610492

約数列:

[1, 2, 4, 17, 19, 23, 34, 38, 46, 68, 76, 92, 323, 391, 437, 646, 733, 782, 874, 1292, 1466, 1564, 1748, 2932, 7429, 12461, 13927, 14858, 16859, 24922, 27854, 29716, 33718, 49844, 55708, 67436, 236759, 286603, 320321, 473518, 573206, 640642, 947036, 1146412, 1281284, 5445457, 10890914, 21781828]

約数ペア:

[(1, 21781828), (2, 10890914), (4, 5445457), (17, 1281284), (19, 1146412), (23, 947036), (34, 640642), (38, 573206), (46, 473518), (68, 320321), (76, 286603), (92, 236759), (323, 67436), (391, 55708), (437, 49844), (646, 33718), (733, 29716), (782, 27854), (874, 24922), (1292, 16859), (1466, 14858), (1564, 13927), (1748, 12461), (2932, 7429)]