19288750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1187}}^1$

素因数の和:1222

約数の個数: 40

約数和(自身を含む): 38968776

約数和(自身を除く): 19680026

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1187, 1250, 1625, 2374, 3250, 5935, 8125, 11870, 15431, 16250, 29675, 30862, 59350, 77155, 148375, 154310, 296750, 385775, 741875, 771550, 1483750, 1928875, 3857750, 9644375, 19288750]

約数ペア:

[(1, 19288750), (2, 9644375), (5, 3857750), (10, 1928875), (13, 1483750), (25, 771550), (26, 741875), (50, 385775), (65, 296750), (125, 154310), (130, 148375), (250, 77155), (325, 59350), (625, 30862), (650, 29675), (1187, 16250), (1250, 15431), (1625, 11870), (2374, 8125), (3250, 5935)]