20912988

素因数分解:

$2^2\times 3^1\times {\mathrm{409}}^1\times {\mathrm{4261}}^1$

素因数の和:4677

約数の個数: 24

約数和(自身を含む): 48927760

約数和(自身を除く): 28014772

約数列:

[1, 2, 3, 4, 6, 12, 409, 818, 1227, 1636, 2454, 4261, 4908, 8522, 12783, 17044, 25566, 51132, 1742749, 3485498, 5228247, 6970996, 10456494, 20912988]

約数ペア:

[(1, 20912988), (2, 10456494), (3, 6970996), (4, 5228247), (6, 3485498), (12, 1742749), (409, 51132), (818, 25566), (1227, 17044), (1636, 12783), (2454, 8522), (4261, 4908)]