18645939

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:109

約数の個数: 48

約数和(自身を含む): 31187520

約数和(自身を除く): 12541581

約数列:

[1, 3, 9, 13, 23, 39, 41, 69, 117, 123, 169, 207, 299, 369, 507, 533, 897, 943, 1521, 1599, 2197, 2691, 2829, 3887, 4797, 6591, 6929, 8487, 11661, 12259, 19773, 20787, 34983, 36777, 50531, 62361, 90077, 110331, 151593, 159367, 270231, 454779, 478101, 810693, 1434303, 2071771, 6215313, 18645939]

約数ペア:

[(1, 18645939), (3, 6215313), (9, 2071771), (13, 1434303), (23, 810693), (39, 478101), (41, 454779), (69, 270231), (117, 159367), (123, 151593), (169, 110331), (207, 90077), (299, 62361), (369, 50531), (507, 36777), (533, 34983), (897, 20787), (943, 19773), (1521, 12259), (1599, 11661), (2197, 8487), (2691, 6929), (2829, 6591), (3887, 4797)]