20808378

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:547

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 26366022

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 89, 93, 178, 186, 267, 279, 419, 534, 558, 801, 838, 1257, 1602, 2514, 2759, 3771, 5518, 7542, 8277, 12989, 16554, 24831, 25978, 37291, 38967, 49662, 74582, 77934, 111873, 116901, 223746, 233802, 335619, 671238, 1156021, 2312042, 3468063, 6936126, 10404189, 20808378]

約数ペア:

[(1, 20808378), (2, 10404189), (3, 6936126), (6, 3468063), (9, 2312042), (18, 1156021), (31, 671238), (62, 335619), (89, 233802), (93, 223746), (178, 116901), (186, 111873), (267, 77934), (279, 74582), (419, 49662), (534, 38967), (558, 37291), (801, 25978), (838, 24831), (1257, 16554), (1602, 12989), (2514, 8277), (2759, 7542), (3771, 5518)]