28388750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1747}}^1$

素因数の和:1782

約数の個数: 40

約数和(自身を含む): 57337896

約数和(自身を除く): 28949146

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 1747, 3250, 3494, 8125, 8735, 16250, 17470, 22711, 43675, 45422, 87350, 113555, 218375, 227110, 436750, 567775, 1091875, 1135550, 2183750, 2838875, 5677750, 14194375, 28388750]

約数ペア:

[(1, 28388750), (2, 14194375), (5, 5677750), (10, 2838875), (13, 2183750), (25, 1135550), (26, 1091875), (50, 567775), (65, 436750), (125, 227110), (130, 218375), (250, 113555), (325, 87350), (625, 45422), (650, 43675), (1250, 22711), (1625, 17470), (1747, 16250), (3250, 8735), (3494, 8125)]