21242256

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{331}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 63234048

約数和(自身を除く): 41991792

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 191, 331, 336, 382, 573, 662, 764, 993, 1146, 1324, 1337, 1528, 1986, 2292, 2317, 2648, 2674, 3056, 3972, 4011, 4584, 4634, 5296, 5348, 6951, 7944, 8022, 9168, 9268, 10696, 13902, 15888, 16044, 18536, 21392, 27804, 32088, 37072, 55608, 63221, 64176, 111216, 126442, 189663, 252884, 379326, 442547, 505768, 758652, 885094, 1011536, 1327641, 1517304, 1770188, 2655282, 3034608, 3540376, 5310564, 7080752, 10621128, 21242256]

約数ペア:

[(1, 21242256), (2, 10621128), (3, 7080752), (4, 5310564), (6, 3540376), (7, 3034608), (8, 2655282), (12, 1770188), (14, 1517304), (16, 1327641), (21, 1011536), (24, 885094), (28, 758652), (42, 505768), (48, 442547), (56, 379326), (84, 252884), (112, 189663), (168, 126442), (191, 111216), (331, 64176), (336, 63221), (382, 55608), (573, 37072), (662, 32088), (764, 27804), (993, 21392), (1146, 18536), (1324, 16044), (1337, 15888), (1528, 13902), (1986, 10696), (2292, 9268), (2317, 9168), (2648, 8022), (2674, 7944), (3056, 6951), (3972, 5348), (4011, 5296), (4584, 4634)]