20663664

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:798

約数の個数: 80

約数和(自身を含む): 61781760

約数和(自身を除く): 41118096

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 89, 112, 168, 178, 267, 336, 356, 534, 623, 691, 712, 1068, 1246, 1382, 1424, 1869, 2073, 2136, 2492, 2764, 3738, 4146, 4272, 4837, 4984, 5528, 7476, 8292, 9674, 9968, 11056, 14511, 14952, 16584, 19348, 29022, 29904, 33168, 38696, 58044, 61499, 77392, 116088, 122998, 184497, 232176, 245996, 368994, 430493, 491992, 737988, 860986, 983984, 1291479, 1475976, 1721972, 2582958, 2951952, 3443944, 5165916, 6887888, 10331832, 20663664]

約数ペア:

[(1, 20663664), (2, 10331832), (3, 6887888), (4, 5165916), (6, 3443944), (7, 2951952), (8, 2582958), (12, 1721972), (14, 1475976), (16, 1291479), (21, 983984), (24, 860986), (28, 737988), (42, 491992), (48, 430493), (56, 368994), (84, 245996), (89, 232176), (112, 184497), (168, 122998), (178, 116088), (267, 77392), (336, 61499), (356, 58044), (534, 38696), (623, 33168), (691, 29904), (712, 29022), (1068, 19348), (1246, 16584), (1382, 14952), (1424, 14511), (1869, 11056), (2073, 9968), (2136, 9674), (2492, 8292), (2764, 7476), (3738, 5528), (4146, 4984), (4272, 4837)]