20809921964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{128969}}^1$

素因数の和:129122

約数の個数: 48

約数和(自身を含む): 40950554400

約数和(自身を除く): 20140632436

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 107, 116, 214, 377, 428, 754, 1391, 1508, 2782, 3103, 5564, 6206, 12412, 40339, 80678, 128969, 161356, 257938, 515876, 1676597, 3353194, 3740101, 6706388, 7480202, 13799683, 14960404, 27599366, 48621313, 55198732, 97242626, 179395879, 194485252, 358791758, 400190807, 717583516, 800381614, 1600763228, 5202480491, 10404960982, 20809921964]

約数ペア:

[(1, 20809921964), (2, 10404960982), (4, 5202480491), (13, 1600763228), (26, 800381614), (29, 717583516), (52, 400190807), (58, 358791758), (107, 194485252), (116, 179395879), (214, 97242626), (377, 55198732), (428, 48621313), (754, 27599366), (1391, 14960404), (1508, 13799683), (2782, 7480202), (3103, 6706388), (5564, 3740101), (6206, 3353194), (12412, 1676597), (40339, 515876), (80678, 257938), (128969, 161356)]