18781444

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19320956

約数列:

[1, 2, 4, 11, 22, 29, 41, 44, 58, 82, 116, 164, 319, 359, 451, 638, 718, 902, 1189, 1276, 1436, 1804, 2378, 3949, 4756, 7898, 10411, 13079, 14719, 15796, 20822, 26158, 29438, 41644, 52316, 58876, 114521, 161909, 229042, 323818, 426851, 458084, 647636, 853702, 1707404, 4695361, 9390722, 18781444]

約数ペア:

[(1, 18781444), (2, 9390722), (4, 4695361), (11, 1707404), (22, 853702), (29, 647636), (41, 458084), (44, 426851), (58, 323818), (82, 229042), (116, 161909), (164, 114521), (319, 58876), (359, 52316), (451, 41644), (638, 29438), (718, 26158), (902, 20822), (1189, 15796), (1276, 14719), (1436, 13079), (1804, 10411), (2378, 7898), (3949, 4756)]