19895720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38261}}^1$

素因数の和:38285

約数の個数: 32

約数和(自身を含む): 48210120

約数和(自身を除く): 28314400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38261, 76522, 153044, 191305, 306088, 382610, 497393, 765220, 994786, 1530440, 1989572, 2486965, 3979144, 4973930, 9947860, 19895720]

約数ペア:

[(1, 19895720), (2, 9947860), (4, 4973930), (5, 3979144), (8, 2486965), (10, 1989572), (13, 1530440), (20, 994786), (26, 765220), (40, 497393), (52, 382610), (65, 306088), (104, 191305), (130, 153044), (260, 76522), (520, 38261)]