28001008

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:314

約数の個数: 80

約数和(自身を含む): 66156480

約数和(自身を除く): 38155472

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 37, 56, 58, 74, 112, 116, 148, 203, 232, 233, 259, 296, 406, 464, 466, 518, 592, 812, 932, 1036, 1073, 1624, 1631, 1864, 2072, 2146, 3248, 3262, 3728, 4144, 4292, 6524, 6757, 7511, 8584, 8621, 13048, 13514, 15022, 17168, 17242, 26096, 27028, 30044, 34484, 47299, 54056, 60088, 60347, 68968, 94598, 108112, 120176, 120694, 137936, 189196, 241388, 250009, 378392, 482776, 500018, 756784, 965552, 1000036, 1750063, 2000072, 3500126, 4000144, 7000252, 14000504, 28001008]

約数ペア:

[(1, 28001008), (2, 14000504), (4, 7000252), (7, 4000144), (8, 3500126), (14, 2000072), (16, 1750063), (28, 1000036), (29, 965552), (37, 756784), (56, 500018), (58, 482776), (74, 378392), (112, 250009), (116, 241388), (148, 189196), (203, 137936), (232, 120694), (233, 120176), (259, 108112), (296, 94598), (406, 68968), (464, 60347), (466, 60088), (518, 54056), (592, 47299), (812, 34484), (932, 30044), (1036, 27028), (1073, 26096), (1624, 17242), (1631, 17168), (1864, 15022), (2072, 13514), (2146, 13048), (3248, 8621), (3262, 8584), (3728, 7511), (4144, 6757), (4292, 6524)]