21600018

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 72

約数和(自身を含む): 53155440

約数和(自身を除く): 31555422

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 43, 59, 66, 86, 99, 118, 129, 177, 198, 258, 354, 387, 473, 531, 649, 774, 946, 1062, 1298, 1419, 1849, 1947, 2537, 2838, 3698, 3894, 4257, 5074, 5547, 5841, 7611, 8514, 11094, 11682, 15222, 16641, 20339, 22833, 27907, 33282, 40678, 45666, 55814, 61017, 83721, 109091, 122034, 167442, 183051, 218182, 251163, 327273, 366102, 502326, 654546, 981819, 1200001, 1963638, 2400002, 3600003, 7200006, 10800009, 21600018]

約数ペア:

[(1, 21600018), (2, 10800009), (3, 7200006), (6, 3600003), (9, 2400002), (11, 1963638), (18, 1200001), (22, 981819), (33, 654546), (43, 502326), (59, 366102), (66, 327273), (86, 251163), (99, 218182), (118, 183051), (129, 167442), (177, 122034), (198, 109091), (258, 83721), (354, 61017), (387, 55814), (473, 45666), (531, 40678), (649, 33282), (774, 27907), (946, 22833), (1062, 20339), (1298, 16641), (1419, 15222), (1849, 11682), (1947, 11094), (2537, 8514), (2838, 7611), (3698, 5841), (3894, 5547), (4257, 5074)]