71997984

素因数分解:

$2^5\times 3^5\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:269

約数の個数: 144

約数和(自身を含む): 217945728

約数和(自身を除く): 145947744

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 47, 48, 54, 72, 81, 94, 96, 108, 141, 144, 162, 188, 197, 216, 243, 282, 288, 324, 376, 394, 423, 432, 486, 564, 591, 648, 752, 788, 846, 864, 972, 1128, 1182, 1269, 1296, 1504, 1576, 1692, 1773, 1944, 2256, 2364, 2538, 2592, 3152, 3384, 3546, 3807, 3888, 4512, 4728, 5076, 5319, 6304, 6768, 7092, 7614, 7776, 9259, 9456, 10152, 10638, 11421, 13536, 14184, 15228, 15957, 18518, 18912, 20304, 21276, 22842, 27777, 28368, 30456, 31914, 37036, 40608, 42552, 45684, 47871, 55554, 56736, 60912, 63828, 74072, 83331, 85104, 91368, 95742, 111108, 121824, 127656, 148144, 166662, 170208, 182736, 191484, 222216, 249993, 255312, 296288, 333324, 365472, 382968, 444432, 499986, 510624, 666648, 749979, 765936, 888864, 999972, 1333296, 1499958, 1531872, 1999944, 2249937, 2666592, 2999916, 3999888, 4499874, 5999832, 7999776, 8999748, 11999664, 17999496, 23999328, 35998992, 71997984]

約数ペア:

[(1, 71997984), (2, 35998992), (3, 23999328), (4, 17999496), (6, 11999664), (8, 8999748), (9, 7999776), (12, 5999832), (16, 4499874), (18, 3999888), (24, 2999916), (27, 2666592), (32, 2249937), (36, 1999944), (47, 1531872), (48, 1499958), (54, 1333296), (72, 999972), (81, 888864), (94, 765936), (96, 749979), (108, 666648), (141, 510624), (144, 499986), (162, 444432), (188, 382968), (197, 365472), (216, 333324), (243, 296288), (282, 255312), (288, 249993), (324, 222216), (376, 191484), (394, 182736), (423, 170208), (432, 166662), (486, 148144), (564, 127656), (591, 121824), (648, 111108), (752, 95742), (788, 91368), (846, 85104), (864, 83331), (972, 74072), (1128, 63828), (1182, 60912), (1269, 56736), (1296, 55554), (1504, 47871), (1576, 45684), (1692, 42552), (1773, 40608), (1944, 37036), (2256, 31914), (2364, 30456), (2538, 28368), (2592, 27777), (3152, 22842), (3384, 21276), (3546, 20304), (3807, 18912), (3888, 18518), (4512, 15957), (4728, 15228), (5076, 14184), (5319, 13536), (6304, 11421), (6768, 10638), (7092, 10152), (7614, 9456), (7776, 9259)]