19947664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 80

約数和(自身を含む): 45800640

約数和(自身を除く): 25852976

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 59, 68, 88, 113, 118, 136, 176, 187, 226, 236, 272, 374, 452, 472, 649, 748, 904, 944, 1003, 1243, 1298, 1496, 1808, 1921, 2006, 2486, 2596, 2992, 3842, 4012, 4972, 5192, 6667, 7684, 8024, 9944, 10384, 11033, 13334, 15368, 16048, 19888, 21131, 22066, 26668, 30736, 42262, 44132, 53336, 73337, 84524, 88264, 106672, 113339, 146674, 169048, 176528, 226678, 293348, 338096, 453356, 586696, 906712, 1173392, 1246729, 1813424, 2493458, 4986916, 9973832, 19947664]

約数ペア:

[(1, 19947664), (2, 9973832), (4, 4986916), (8, 2493458), (11, 1813424), (16, 1246729), (17, 1173392), (22, 906712), (34, 586696), (44, 453356), (59, 338096), (68, 293348), (88, 226678), (113, 176528), (118, 169048), (136, 146674), (176, 113339), (187, 106672), (226, 88264), (236, 84524), (272, 73337), (374, 53336), (452, 44132), (472, 42262), (649, 30736), (748, 26668), (904, 22066), (944, 21131), (1003, 19888), (1243, 16048), (1298, 15368), (1496, 13334), (1808, 11033), (1921, 10384), (2006, 9944), (2486, 8024), (2596, 7684), (2992, 6667), (3842, 5192), (4012, 4972)]