18977080

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 44382240

約数和(自身を除く): 25405160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 73, 97, 134, 146, 194, 268, 292, 335, 365, 388, 485, 536, 584, 670, 730, 776, 970, 1340, 1460, 1940, 2680, 2920, 3880, 4891, 6499, 7081, 9782, 12998, 14162, 19564, 24455, 25996, 28324, 32495, 35405, 39128, 48910, 51992, 56648, 64990, 70810, 97820, 129980, 141620, 195640, 259960, 283240, 474427, 948854, 1897708, 2372135, 3795416, 4744270, 9488540, 18977080]

約数ペア:

[(1, 18977080), (2, 9488540), (4, 4744270), (5, 3795416), (8, 2372135), (10, 1897708), (20, 948854), (40, 474427), (67, 283240), (73, 259960), (97, 195640), (134, 141620), (146, 129980), (194, 97820), (268, 70810), (292, 64990), (335, 56648), (365, 51992), (388, 48910), (485, 39128), (536, 35405), (584, 32495), (670, 28324), (730, 25996), (776, 24455), (970, 19564), (1340, 14162), (1460, 12998), (1940, 9782), (2680, 7081), (2920, 6499), (3880, 4891)]