21000497001

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{56123}}^1$

素因数の和:56206

約数の個数: 64

約数和(自身を含む): 34913617920

約数和(自身を除く): 13913120919

約数列:

[1, 3, 11, 17, 23, 29, 33, 51, 69, 87, 187, 253, 319, 391, 493, 561, 667, 759, 957, 1173, 1479, 2001, 4301, 5423, 7337, 11339, 12903, 16269, 22011, 34017, 56123, 124729, 168369, 374187, 617353, 954091, 1290829, 1627567, 1852059, 2862273, 3872487, 4882701, 10495001, 14199119, 17903237, 21944093, 27668639, 31485003, 37434041, 42597357, 53709711, 65832279, 83005917, 112302123, 241385023, 304355029, 411774451, 636378697, 724155069, 913065087, 1235323353, 1909136091, 7000165667, 21000497001]

約数ペア:

[(1, 21000497001), (3, 7000165667), (11, 1909136091), (17, 1235323353), (23, 913065087), (29, 724155069), (33, 636378697), (51, 411774451), (69, 304355029), (87, 241385023), (187, 112302123), (253, 83005917), (319, 65832279), (391, 53709711), (493, 42597357), (561, 37434041), (667, 31485003), (759, 27668639), (957, 21944093), (1173, 17903237), (1479, 14199119), (2001, 10495001), (4301, 4882701), (5423, 3872487), (7337, 2862273), (11339, 1852059), (12903, 1627567), (16269, 1290829), (22011, 954091), (34017, 617353), (56123, 374187), (124729, 168369)]