18855837

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 108

約数和(自身を含む): 39053664

約数和(自身を除く): 20197827

約数列:

[1, 3, 7, 9, 11, 13, 21, 23, 33, 39, 49, 63, 69, 77, 91, 99, 117, 143, 147, 161, 169, 207, 231, 253, 273, 299, 429, 441, 483, 507, 539, 637, 693, 759, 819, 897, 1001, 1127, 1183, 1287, 1449, 1521, 1617, 1771, 1859, 1911, 2093, 2277, 2691, 3003, 3289, 3381, 3549, 3887, 4851, 5313, 5577, 5733, 6279, 7007, 8281, 9009, 9867, 10143, 10647, 11661, 12397, 13013, 14651, 15939, 16731, 18837, 21021, 23023, 24843, 27209, 29601, 34983, 37191, 39039, 42757, 43953, 63063, 69069, 74529, 81627, 91091, 111573, 117117, 128271, 131859, 161161, 190463, 207207, 244881, 273273, 299299, 384813, 483483, 571389, 819819, 897897, 1450449, 1714167, 2095093, 2693691, 6285279, 18855837]

約数ペア:

[(1, 18855837), (3, 6285279), (7, 2693691), (9, 2095093), (11, 1714167), (13, 1450449), (21, 897897), (23, 819819), (33, 571389), (39, 483483), (49, 384813), (63, 299299), (69, 273273), (77, 244881), (91, 207207), (99, 190463), (117, 161161), (143, 131859), (147, 128271), (161, 117117), (169, 111573), (207, 91091), (231, 81627), (253, 74529), (273, 69069), (299, 63063), (429, 43953), (441, 42757), (483, 39039), (507, 37191), (539, 34983), (637, 29601), (693, 27209), (759, 24843), (819, 23023), (897, 21021), (1001, 18837), (1127, 16731), (1183, 15939), (1287, 14651), (1449, 13013), (1521, 12397), (1617, 11661), (1771, 10647), (1859, 10143), (1911, 9867), (2093, 9009), (2277, 8281), (2691, 7007), (3003, 6279), (3289, 5733), (3381, 5577), (3549, 5313), (3887, 4851)]