1299220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 3104640

約数和(自身を除く): 1805420

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 263, 380, 494, 526, 988, 1052, 1235, 1315, 2470, 2630, 3419, 4940, 4997, 5260, 6838, 9994, 13676, 17095, 19988, 24985, 34190, 49970, 64961, 68380, 99940, 129922, 259844, 324805, 649610, 1299220]

約数ペア:

[(1, 1299220), (2, 649610), (4, 324805), (5, 259844), (10, 129922), (13, 99940), (19, 68380), (20, 64961), (26, 49970), (38, 34190), (52, 24985), (65, 19988), (76, 17095), (95, 13676), (130, 9994), (190, 6838), (247, 5260), (260, 4997), (263, 4940), (380, 3419), (494, 2630), (526, 2470), (988, 1315), (1052, 1235)]