21188748

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 59637760

約数和(自身を除く): 38449012

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 42, 62, 79, 84, 93, 103, 124, 158, 186, 206, 217, 237, 309, 316, 372, 412, 434, 474, 553, 618, 651, 721, 868, 948, 1106, 1236, 1302, 1442, 1659, 2163, 2212, 2449, 2604, 2884, 3193, 3318, 4326, 4898, 6386, 6636, 7347, 8137, 8652, 9579, 9796, 12772, 14694, 16274, 17143, 19158, 22351, 24411, 29388, 32548, 34286, 38316, 44702, 48822, 51429, 56959, 67053, 68572, 89404, 97644, 102858, 113918, 134106, 170877, 205716, 227836, 252247, 268212, 341754, 504494, 683508, 756741, 1008988, 1513482, 1765729, 3026964, 3531458, 5297187, 7062916, 10594374, 21188748]

約数ペア:

[(1, 21188748), (2, 10594374), (3, 7062916), (4, 5297187), (6, 3531458), (7, 3026964), (12, 1765729), (14, 1513482), (21, 1008988), (28, 756741), (31, 683508), (42, 504494), (62, 341754), (79, 268212), (84, 252247), (93, 227836), (103, 205716), (124, 170877), (158, 134106), (186, 113918), (206, 102858), (217, 97644), (237, 89404), (309, 68572), (316, 67053), (372, 56959), (412, 51429), (434, 48822), (474, 44702), (553, 38316), (618, 34286), (651, 32548), (721, 29388), (868, 24411), (948, 22351), (1106, 19158), (1236, 17143), (1302, 16274), (1442, 14694), (1659, 12772), (2163, 9796), (2212, 9579), (2449, 8652), (2604, 8137), (2884, 7347), (3193, 6636), (3318, 6386), (4326, 4898)]