19682920

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1871}}^1$

素因数の和:2145

約数の個数: 32

約数和(自身を含む): 44478720

約数和(自身を除く): 24795800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1871, 2104, 2630, 3742, 5260, 7484, 9355, 10520, 14968, 18710, 37420, 74840, 492073, 984146, 1968292, 2460365, 3936584, 4920730, 9841460, 19682920]

約数ペア:

[(1, 19682920), (2, 9841460), (4, 4920730), (5, 3936584), (8, 2460365), (10, 1968292), (20, 984146), (40, 492073), (263, 74840), (526, 37420), (1052, 18710), (1315, 14968), (1871, 10520), (2104, 9355), (2630, 7484), (3742, 5260)]