20718152

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27665848

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 149, 182, 191, 298, 364, 382, 596, 728, 764, 1043, 1192, 1337, 1528, 1937, 2086, 2483, 2674, 3874, 4172, 4966, 5348, 7748, 8344, 9932, 10696, 13559, 15496, 17381, 19864, 27118, 28459, 34762, 54236, 56918, 69524, 108472, 113836, 139048, 199213, 227672, 369967, 398426, 739934, 796852, 1479868, 1593704, 2589769, 2959736, 5179538, 10359076, 20718152]

約数ペア:

[(1, 20718152), (2, 10359076), (4, 5179538), (7, 2959736), (8, 2589769), (13, 1593704), (14, 1479868), (26, 796852), (28, 739934), (52, 398426), (56, 369967), (91, 227672), (104, 199213), (149, 139048), (182, 113836), (191, 108472), (298, 69524), (364, 56918), (382, 54236), (596, 34762), (728, 28459), (764, 27118), (1043, 19864), (1192, 17381), (1337, 15496), (1528, 13559), (1937, 10696), (2086, 9932), (2483, 8344), (2674, 7748), (3874, 5348), (4172, 4966)]