20642284

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1229}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 22752116

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 76, 221, 247, 323, 442, 494, 646, 884, 988, 1229, 1292, 2458, 4199, 4916, 8398, 15977, 16796, 20893, 23351, 31954, 41786, 46702, 63908, 83572, 93404, 271609, 303563, 396967, 543218, 607126, 793934, 1086436, 1214252, 1587868, 5160571, 10321142, 20642284]

約数ペア:

[(1, 20642284), (2, 10321142), (4, 5160571), (13, 1587868), (17, 1214252), (19, 1086436), (26, 793934), (34, 607126), (38, 543218), (52, 396967), (68, 303563), (76, 271609), (221, 93404), (247, 83572), (323, 63908), (442, 46702), (494, 41786), (646, 31954), (884, 23351), (988, 20893), (1229, 16796), (1292, 15977), (2458, 8398), (4199, 4916)]