28153060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 69148800

約数和(自身を除く): 40995740

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 41, 52, 65, 76, 82, 95, 130, 139, 164, 190, 205, 247, 260, 278, 380, 410, 494, 533, 556, 695, 779, 820, 988, 1066, 1235, 1390, 1558, 1807, 2132, 2470, 2641, 2665, 2780, 3116, 3614, 3895, 4940, 5282, 5330, 5699, 7228, 7790, 9035, 10127, 10564, 10660, 11398, 13205, 15580, 18070, 20254, 22796, 26410, 28495, 34333, 36140, 40508, 50635, 52820, 56990, 68666, 74087, 101270, 108281, 113980, 137332, 148174, 171665, 202540, 216562, 296348, 343330, 370435, 433124, 541405, 686660, 740870, 1082810, 1407653, 1481740, 2165620, 2815306, 5630612, 7038265, 14076530, 28153060]

約数ペア:

[(1, 28153060), (2, 14076530), (4, 7038265), (5, 5630612), (10, 2815306), (13, 2165620), (19, 1481740), (20, 1407653), (26, 1082810), (38, 740870), (41, 686660), (52, 541405), (65, 433124), (76, 370435), (82, 343330), (95, 296348), (130, 216562), (139, 202540), (164, 171665), (190, 148174), (205, 137332), (247, 113980), (260, 108281), (278, 101270), (380, 74087), (410, 68666), (494, 56990), (533, 52820), (556, 50635), (695, 40508), (779, 36140), (820, 34333), (988, 28495), (1066, 26410), (1235, 22796), (1390, 20254), (1558, 18070), (1807, 15580), (2132, 13205), (2470, 11398), (2641, 10660), (2665, 10564), (2780, 10127), (3116, 9035), (3614, 7790), (3895, 7228), (4940, 5699), (5282, 5330)]