20288255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 27820800

約数和(自身を除く): 7532545

約数列:

[1, 5, 13, 29, 47, 65, 145, 229, 235, 377, 611, 1145, 1363, 1885, 2977, 3055, 6641, 6815, 10763, 14885, 17719, 33205, 53815, 86333, 88595, 139919, 312127, 431665, 699595, 1560635, 4057651, 20288255]

約数ペア:

[(1, 20288255), (5, 4057651), (13, 1560635), (29, 699595), (47, 431665), (65, 312127), (145, 139919), (229, 88595), (235, 86333), (377, 53815), (611, 33205), (1145, 17719), (1363, 14885), (1885, 10763), (2977, 6815), (3055, 6641)]