20890064

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1499}}^1$

素因数の和:1587

約数の個数: 40

約数和(自身を含む): 44268000

約数和(自身を除く): 23377936

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1499, 1742, 2998, 3484, 5996, 6968, 11992, 13936, 19487, 23984, 38974, 77948, 100433, 155896, 200866, 311792, 401732, 803464, 1305629, 1606928, 2611258, 5222516, 10445032, 20890064]

約数ペア:

[(1, 20890064), (2, 10445032), (4, 5222516), (8, 2611258), (13, 1606928), (16, 1305629), (26, 803464), (52, 401732), (67, 311792), (104, 200866), (134, 155896), (208, 100433), (268, 77948), (536, 38974), (871, 23984), (1072, 19487), (1499, 13936), (1742, 11992), (2998, 6968), (3484, 5996)]