20668242

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29098158

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 71, 87, 142, 174, 203, 213, 239, 406, 426, 478, 497, 609, 717, 994, 1218, 1434, 1491, 1673, 2059, 2982, 3346, 4118, 5019, 6177, 6931, 10038, 12354, 13862, 14413, 16969, 20793, 28826, 33938, 41586, 43239, 48517, 50907, 86478, 97034, 101814, 118783, 145551, 237566, 291102, 356349, 492101, 712698, 984202, 1476303, 2952606, 3444707, 6889414, 10334121, 20668242]

約数ペア:

[(1, 20668242), (2, 10334121), (3, 6889414), (6, 3444707), (7, 2952606), (14, 1476303), (21, 984202), (29, 712698), (42, 492101), (58, 356349), (71, 291102), (87, 237566), (142, 145551), (174, 118783), (203, 101814), (213, 97034), (239, 86478), (406, 50907), (426, 48517), (478, 43239), (497, 41586), (609, 33938), (717, 28826), (994, 20793), (1218, 16969), (1434, 14413), (1491, 13862), (1673, 12354), (2059, 10038), (2982, 6931), (3346, 6177), (4118, 5019)]