21938228

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 46484928

約数和(自身を除く): 24546700

約数列:

[1, 2, 4, 13, 17, 23, 26, 34, 46, 52, 68, 83, 92, 166, 169, 221, 299, 332, 338, 391, 442, 598, 676, 782, 884, 1079, 1196, 1411, 1564, 1909, 2158, 2822, 2873, 3818, 3887, 4316, 5083, 5644, 5746, 7636, 7774, 10166, 11492, 14027, 15548, 18343, 20332, 24817, 28054, 32453, 36686, 49634, 56108, 64906, 66079, 73372, 99268, 129812, 132158, 238459, 264316, 322621, 421889, 476918, 645242, 843778, 953836, 1290484, 1687556, 5484557, 10969114, 21938228]

約数ペア:

[(1, 21938228), (2, 10969114), (4, 5484557), (13, 1687556), (17, 1290484), (23, 953836), (26, 843778), (34, 645242), (46, 476918), (52, 421889), (68, 322621), (83, 264316), (92, 238459), (166, 132158), (169, 129812), (221, 99268), (299, 73372), (332, 66079), (338, 64906), (391, 56108), (442, 49634), (598, 36686), (676, 32453), (782, 28054), (884, 24817), (1079, 20332), (1196, 18343), (1411, 15548), (1564, 14027), (1909, 11492), (2158, 10166), (2822, 7774), (2873, 7636), (3818, 5746), (3887, 5644), (4316, 5083)]