18696972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2161}}^1$

素因数の和:2278

約数の個数: 48

約数和(自身を含む): 50365952

約数和(自身を除く): 31668980

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 103, 206, 309, 412, 618, 721, 1236, 1442, 2161, 2163, 2884, 4322, 4326, 6483, 8644, 8652, 12966, 15127, 25932, 30254, 45381, 60508, 90762, 181524, 222583, 445166, 667749, 890332, 1335498, 1558081, 2670996, 3116162, 4674243, 6232324, 9348486, 18696972]

約数ペア:

[(1, 18696972), (2, 9348486), (3, 6232324), (4, 4674243), (6, 3116162), (7, 2670996), (12, 1558081), (14, 1335498), (21, 890332), (28, 667749), (42, 445166), (84, 222583), (103, 181524), (206, 90762), (309, 60508), (412, 45381), (618, 30254), (721, 25932), (1236, 15127), (1442, 12966), (2161, 8652), (2163, 8644), (2884, 6483), (4322, 4326)]