21943528

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 42525000

約数和(自身を除く): 20581472

約数列:

[1, 2, 4, 8, 41, 82, 149, 164, 298, 328, 449, 596, 898, 1192, 1796, 3592, 6109, 12218, 18409, 24436, 36818, 48872, 66901, 73636, 133802, 147272, 267604, 535208, 2742941, 5485882, 10971764, 21943528]

約数ペア:

[(1, 21943528), (2, 10971764), (4, 5485882), (8, 2742941), (41, 535208), (82, 267604), (149, 147272), (164, 133802), (298, 73636), (328, 66901), (449, 48872), (596, 36818), (898, 24436), (1192, 18409), (1796, 12218), (3592, 6109)]