20498360

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 28490440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 431, 580, 820, 862, 1160, 1189, 1640, 1724, 2155, 2378, 3448, 4310, 4756, 5945, 8620, 9512, 11890, 12499, 17240, 17671, 23780, 24998, 35342, 47560, 49996, 62495, 70684, 88355, 99992, 124990, 141368, 176710, 249980, 353420, 499960, 512459, 706840, 1024918, 2049836, 2562295, 4099672, 5124590, 10249180, 20498360]

約数ペア:

[(1, 20498360), (2, 10249180), (4, 5124590), (5, 4099672), (8, 2562295), (10, 2049836), (20, 1024918), (29, 706840), (40, 512459), (41, 499960), (58, 353420), (82, 249980), (116, 176710), (145, 141368), (164, 124990), (205, 99992), (232, 88355), (290, 70684), (328, 62495), (410, 49996), (431, 47560), (580, 35342), (820, 24998), (862, 23780), (1160, 17671), (1189, 17240), (1640, 12499), (1724, 11890), (2155, 9512), (2378, 8620), (3448, 5945), (4310, 4756)]