19496464

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1399}}^1$

素因数の和:1487

約数の個数: 40

約数和(自身を含む): 41316800

約数和(自身を除く): 21820336

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1399, 1742, 2798, 3484, 5596, 6968, 11192, 13936, 18187, 22384, 36374, 72748, 93733, 145496, 187466, 290992, 374932, 749864, 1218529, 1499728, 2437058, 4874116, 9748232, 19496464]

約数ペア:

[(1, 19496464), (2, 9748232), (4, 4874116), (8, 2437058), (13, 1499728), (16, 1218529), (26, 749864), (52, 374932), (67, 290992), (104, 187466), (134, 145496), (208, 93733), (268, 72748), (536, 36374), (871, 22384), (1072, 18187), (1399, 13936), (1742, 11192), (2798, 6968), (3484, 5596)]