19556875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:145

約数の個数: 40

約数和(自身を含む): 27553680

約数和(自身を除く): 7996805

約数列:

[1, 5, 13, 25, 29, 65, 83, 125, 145, 325, 377, 415, 625, 725, 1079, 1625, 1885, 2075, 2407, 3625, 5395, 8125, 9425, 10375, 12035, 18125, 26975, 31291, 47125, 51875, 60175, 134875, 156455, 235625, 300875, 674375, 782275, 1504375, 3911375, 19556875]

約数ペア:

[(1, 19556875), (5, 3911375), (13, 1504375), (25, 782275), (29, 674375), (65, 300875), (83, 235625), (125, 156455), (145, 134875), (325, 60175), (377, 51875), (415, 47125), (625, 31291), (725, 26975), (1079, 18125), (1625, 12035), (1885, 10375), (2075, 9425), (2407, 8125), (3625, 5395)]