20766525

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 39684960

約数和(自身を除く): 18918435

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 59, 65, 75, 95, 177, 195, 247, 285, 295, 325, 361, 475, 741, 767, 885, 975, 1083, 1121, 1235, 1425, 1475, 1805, 2301, 3363, 3705, 3835, 4425, 4693, 5415, 5605, 6175, 9025, 11505, 14079, 14573, 16815, 18525, 19175, 21299, 23465, 27075, 28025, 43719, 57525, 63897, 70395, 72865, 84075, 106495, 117325, 218595, 276887, 319485, 351975, 364325, 532475, 830661, 1092975, 1384435, 1597425, 4153305, 6922175, 20766525]

約数ペア:

[(1, 20766525), (3, 6922175), (5, 4153305), (13, 1597425), (15, 1384435), (19, 1092975), (25, 830661), (39, 532475), (57, 364325), (59, 351975), (65, 319485), (75, 276887), (95, 218595), (177, 117325), (195, 106495), (247, 84075), (285, 72865), (295, 70395), (325, 63897), (361, 57525), (475, 43719), (741, 28025), (767, 27075), (885, 23465), (975, 21299), (1083, 19175), (1121, 18525), (1235, 16815), (1425, 14573), (1475, 14079), (1805, 11505), (2301, 9025), (3363, 6175), (3705, 5605), (3835, 5415), (4425, 4693)]