21858056

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{769}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 28037944

約数列:

[1, 2, 4, 8, 11, 17, 19, 22, 34, 38, 44, 68, 76, 88, 136, 152, 187, 209, 323, 374, 418, 646, 748, 769, 836, 1292, 1496, 1538, 1672, 2584, 3076, 3553, 6152, 7106, 8459, 13073, 14212, 14611, 16918, 26146, 28424, 29222, 33836, 52292, 58444, 67672, 104584, 116888, 143803, 160721, 248387, 287606, 321442, 496774, 575212, 642884, 993548, 1150424, 1285768, 1987096, 2732257, 5464514, 10929028, 21858056]

約数ペア:

[(1, 21858056), (2, 10929028), (4, 5464514), (8, 2732257), (11, 1987096), (17, 1285768), (19, 1150424), (22, 993548), (34, 642884), (38, 575212), (44, 496774), (68, 321442), (76, 287606), (88, 248387), (136, 160721), (152, 143803), (187, 116888), (209, 104584), (323, 67672), (374, 58444), (418, 52292), (646, 33836), (748, 29222), (769, 28424), (836, 26146), (1292, 16918), (1496, 14611), (1538, 14212), (1672, 13073), (2584, 8459), (3076, 7106), (3553, 6152)]