81993440

素因数分解:

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

素因数の和:516

約数の個数: 96

約数和(自身を含む): 205752960

約数和(自身を除く): 123759520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 41, 58, 80, 82, 116, 145, 160, 164, 205, 232, 290, 328, 410, 431, 464, 580, 656, 820, 862, 928, 1160, 1189, 1312, 1640, 1724, 2155, 2320, 2378, 3280, 3448, 4310, 4640, 4756, 5945, 6560, 6896, 8620, 9512, 11890, 12499, 13792, 17240, 17671, 19024, 23780, 24998, 34480, 35342, 38048, 47560, 49996, 62495, 68960, 70684, 88355, 95120, 99992, 124990, 141368, 176710, 190240, 199984, 249980, 282736, 353420, 399968, 499960, 512459, 565472, 706840, 999920, 1024918, 1413680, 1999840, 2049836, 2562295, 2827360, 4099672, 5124590, 8199344, 10249180, 16398688, 20498360, 40996720, 81993440]

約数ペア:

[(1, 81993440), (2, 40996720), (4, 20498360), (5, 16398688), (8, 10249180), (10, 8199344), (16, 5124590), (20, 4099672), (29, 2827360), (32, 2562295), (40, 2049836), (41, 1999840), (58, 1413680), (80, 1024918), (82, 999920), (116, 706840), (145, 565472), (160, 512459), (164, 499960), (205, 399968), (232, 353420), (290, 282736), (328, 249980), (410, 199984), (431, 190240), (464, 176710), (580, 141368), (656, 124990), (820, 99992), (862, 95120), (928, 88355), (1160, 70684), (1189, 68960), (1312, 62495), (1640, 49996), (1724, 47560), (2155, 38048), (2320, 35342), (2378, 34480), (3280, 24998), (3448, 23780), (4310, 19024), (4640, 17671), (4756, 17240), (5945, 13792), (6560, 12499), (6896, 11890), (8620, 9512)]