19219720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1607}}^1$

素因数の和:1654

約数の個数: 64

約数和(自身を含む): 48625920

約数和(自身を除く): 29406200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1607, 2392, 2990, 3214, 5980, 6428, 8035, 11960, 12856, 16070, 20891, 32140, 36961, 41782, 64280, 73922, 83564, 104455, 147844, 167128, 184805, 208910, 295688, 369610, 417820, 480493, 739220, 835640, 960986, 1478440, 1921972, 2402465, 3843944, 4804930, 9609860, 19219720]

約数ペア:

[(1, 19219720), (2, 9609860), (4, 4804930), (5, 3843944), (8, 2402465), (10, 1921972), (13, 1478440), (20, 960986), (23, 835640), (26, 739220), (40, 480493), (46, 417820), (52, 369610), (65, 295688), (92, 208910), (104, 184805), (115, 167128), (130, 147844), (184, 104455), (230, 83564), (260, 73922), (299, 64280), (460, 41782), (520, 36961), (598, 32140), (920, 20891), (1196, 16070), (1495, 12856), (1607, 11960), (2392, 8035), (2990, 6428), (3214, 5980)]