20161993725

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{241}}^1\times {\mathrm{8647}}^1$

素因数の和:8947

約数の個数: 72

約数和(自身を含む): 37109813312

約数和(自身を除く): 16947819587

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 241, 387, 645, 723, 1075, 1205, 1935, 2169, 3225, 3615, 6025, 8647, 9675, 10363, 10845, 18075, 25941, 31089, 43235, 51815, 54225, 77823, 93267, 129705, 155445, 216175, 259075, 371821, 389115, 466335, 648525, 777225, 1115463, 1859105, 1945575, 2083927, 2331675, 3346389, 5577315, 6251781, 9295525, 10419635, 16731945, 18755343, 27886575, 31258905, 52098175, 83659725, 89608861, 93776715, 156294525, 268826583, 448044305, 468883575, 806479749, 1344132915, 2240221525, 4032398745, 6720664575, 20161993725]

約数ペア:

[(1, 20161993725), (3, 6720664575), (5, 4032398745), (9, 2240221525), (15, 1344132915), (25, 806479749), (43, 468883575), (45, 448044305), (75, 268826583), (129, 156294525), (215, 93776715), (225, 89608861), (241, 83659725), (387, 52098175), (645, 31258905), (723, 27886575), (1075, 18755343), (1205, 16731945), (1935, 10419635), (2169, 9295525), (3225, 6251781), (3615, 5577315), (6025, 3346389), (8647, 2331675), (9675, 2083927), (10363, 1945575), (10845, 1859105), (18075, 1115463), (25941, 777225), (31089, 648525), (43235, 466335), (51815, 389115), (54225, 371821), (77823, 259075), (93267, 216175), (129705, 155445)]