20187970516

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{881}}^1\times {\mathrm{2267}}^1$

素因数の和:3197

約数の個数: 72

約数和(自身を含む): 42680022336

約数和(自身を除く): 22492051820

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 361, 532, 722, 881, 1444, 1762, 2267, 2527, 3524, 4534, 5054, 6167, 9068, 10108, 12334, 15869, 16739, 24668, 31738, 33478, 43073, 63476, 66956, 86146, 117173, 172292, 234346, 301511, 318041, 468692, 603022, 636082, 818387, 1206044, 1272164, 1636774, 1997227, 2226287, 3273548, 3994454, 4452574, 5728709, 7988908, 8905148, 11457418, 13980589, 22914836, 27961178, 37947313, 55922356, 75894626, 151789252, 265631191, 531262382, 720998947, 1062524764, 1441997894, 2883995788, 5046992629, 10093985258, 20187970516]

約数ペア:

[(1, 20187970516), (2, 10093985258), (4, 5046992629), (7, 2883995788), (14, 1441997894), (19, 1062524764), (28, 720998947), (38, 531262382), (76, 265631191), (133, 151789252), (266, 75894626), (361, 55922356), (532, 37947313), (722, 27961178), (881, 22914836), (1444, 13980589), (1762, 11457418), (2267, 8905148), (2527, 7988908), (3524, 5728709), (4534, 4452574), (5054, 3994454), (6167, 3273548), (9068, 2226287), (10108, 1997227), (12334, 1636774), (15869, 1272164), (16739, 1206044), (24668, 818387), (31738, 636082), (33478, 603022), (43073, 468692), (63476, 318041), (66956, 301511), (86146, 234346), (117173, 172292)]