21000761328

素因数分解:

$2^4\times 3^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1\times {\mathrm{24083}}^1$

素因数の和:24622

約数の個数: 80

約数和(自身を含む): 55834033536

約数和(自身を除く): 34833272208

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 37, 48, 74, 111, 148, 222, 296, 444, 491, 592, 888, 982, 1473, 1776, 1964, 2946, 3928, 5892, 7856, 11784, 18167, 23568, 24083, 36334, 48166, 54501, 72249, 72668, 96332, 109002, 144498, 145336, 192664, 218004, 288996, 290672, 385328, 436008, 577992, 872016, 891071, 1155984, 1782142, 2673213, 3564284, 5346426, 7128568, 10692852, 11824753, 14257136, 21385704, 23649506, 35474259, 42771408, 47299012, 70948518, 94598024, 141897036, 189196048, 283794072, 437515861, 567588144, 875031722, 1312547583, 1750063444, 2625095166, 3500126888, 5250190332, 7000253776, 10500380664, 21000761328]

約数ペア:

[(1, 21000761328), (2, 10500380664), (3, 7000253776), (4, 5250190332), (6, 3500126888), (8, 2625095166), (12, 1750063444), (16, 1312547583), (24, 875031722), (37, 567588144), (48, 437515861), (74, 283794072), (111, 189196048), (148, 141897036), (222, 94598024), (296, 70948518), (444, 47299012), (491, 42771408), (592, 35474259), (888, 23649506), (982, 21385704), (1473, 14257136), (1776, 11824753), (1964, 10692852), (2946, 7128568), (3928, 5346426), (5892, 3564284), (7856, 2673213), (11784, 1782142), (18167, 1155984), (23568, 891071), (24083, 872016), (36334, 577992), (48166, 436008), (54501, 385328), (72249, 290672), (72668, 288996), (96332, 218004), (109002, 192664), (144498, 145336)]