21102256

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 49550400

約数和(自身を除く): 28448144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 73, 89, 112, 116, 146, 178, 203, 232, 292, 356, 406, 464, 511, 584, 623, 712, 812, 1022, 1168, 1246, 1424, 1624, 2044, 2117, 2492, 2581, 3248, 4088, 4234, 4984, 5162, 6497, 8176, 8468, 9968, 10324, 12994, 14819, 16936, 18067, 20648, 25988, 29638, 33872, 36134, 41296, 45479, 51976, 59276, 72268, 90958, 103952, 118552, 144536, 181916, 188413, 237104, 289072, 363832, 376826, 727664, 753652, 1318891, 1507304, 2637782, 3014608, 5275564, 10551128, 21102256]

約数ペア:

[(1, 21102256), (2, 10551128), (4, 5275564), (7, 3014608), (8, 2637782), (14, 1507304), (16, 1318891), (28, 753652), (29, 727664), (56, 376826), (58, 363832), (73, 289072), (89, 237104), (112, 188413), (116, 181916), (146, 144536), (178, 118552), (203, 103952), (232, 90958), (292, 72268), (356, 59276), (406, 51976), (464, 45479), (511, 41296), (584, 36134), (623, 33872), (712, 29638), (812, 25988), (1022, 20648), (1168, 18067), (1246, 16936), (1424, 14819), (1624, 12994), (2044, 10324), (2117, 9968), (2492, 8468), (2581, 8176), (3248, 6497), (4088, 5162), (4234, 4984)]