19839950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 40216176

約数和(自身を除く): 20376226

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 131, 233, 262, 325, 466, 650, 655, 1165, 1310, 1703, 2330, 3029, 3275, 3406, 5825, 6058, 6550, 8515, 11650, 15145, 17030, 30290, 30523, 42575, 61046, 75725, 85150, 151450, 152615, 305230, 396799, 763075, 793598, 1526150, 1983995, 3967990, 9919975, 19839950]

約数ペア:

[(1, 19839950), (2, 9919975), (5, 3967990), (10, 1983995), (13, 1526150), (25, 793598), (26, 763075), (50, 396799), (65, 305230), (130, 152615), (131, 151450), (233, 85150), (262, 75725), (325, 61046), (466, 42575), (650, 30523), (655, 30290), (1165, 17030), (1310, 15145), (1703, 11650), (2330, 8515), (3029, 6550), (3275, 6058), (3406, 5825)]