18071984

素因数分解:

$2^4\times 7^3\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 80

約数和(自身を含む): 42408000

約数和(自身を除く): 24336016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 49, 56, 74, 89, 98, 112, 148, 178, 196, 259, 296, 343, 356, 392, 518, 592, 623, 686, 712, 784, 1036, 1246, 1372, 1424, 1813, 2072, 2492, 2744, 3293, 3626, 4144, 4361, 4984, 5488, 6586, 7252, 8722, 9968, 12691, 13172, 14504, 17444, 23051, 25382, 26344, 29008, 30527, 34888, 46102, 50764, 52688, 61054, 69776, 92204, 101528, 122108, 161357, 184408, 203056, 244216, 322714, 368816, 488432, 645428, 1129499, 1290856, 2258998, 2581712, 4517996, 9035992, 18071984]

約数ペア:

[(1, 18071984), (2, 9035992), (4, 4517996), (7, 2581712), (8, 2258998), (14, 1290856), (16, 1129499), (28, 645428), (37, 488432), (49, 368816), (56, 322714), (74, 244216), (89, 203056), (98, 184408), (112, 161357), (148, 122108), (178, 101528), (196, 92204), (259, 69776), (296, 61054), (343, 52688), (356, 50764), (392, 46102), (518, 34888), (592, 30527), (623, 29008), (686, 26344), (712, 25382), (784, 23051), (1036, 17444), (1246, 14504), (1372, 13172), (1424, 12691), (1813, 9968), (2072, 8722), (2492, 7252), (2744, 6586), (3293, 5488), (3626, 4984), (4144, 4361)]