18940625

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:84

約数の個数: 48

約数和(自身を含む): 28123200

約数和(自身を除く): 9182575

約数列:

[1, 5, 11, 19, 25, 29, 55, 95, 125, 145, 209, 275, 319, 475, 551, 625, 725, 1045, 1375, 1595, 2375, 2755, 3125, 3625, 5225, 6061, 6875, 7975, 11875, 13775, 18125, 26125, 30305, 34375, 39875, 59375, 68875, 90625, 130625, 151525, 199375, 344375, 653125, 757625, 996875, 1721875, 3788125, 18940625]

約数ペア:

[(1, 18940625), (5, 3788125), (11, 1721875), (19, 996875), (25, 757625), (29, 653125), (55, 344375), (95, 199375), (125, 151525), (145, 130625), (209, 90625), (275, 68875), (319, 59375), (475, 39875), (551, 34375), (625, 30305), (725, 26125), (1045, 18125), (1375, 13775), (1595, 11875), (2375, 7975), (2755, 6875), (3125, 6061), (3625, 5225)]