20817972

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:227

約数の個数: 120

約数和(自身を含む): 63585984

約数和(自身を除く): 42768012

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 67, 81, 84, 108, 126, 134, 137, 162, 189, 201, 252, 268, 274, 324, 378, 402, 411, 469, 548, 567, 603, 756, 804, 822, 938, 959, 1134, 1206, 1233, 1407, 1644, 1809, 1876, 1918, 2268, 2412, 2466, 2814, 2877, 3618, 3699, 3836, 4221, 4932, 5427, 5628, 5754, 7236, 7398, 8442, 8631, 9179, 10854, 11097, 11508, 12663, 14796, 16884, 17262, 18358, 21708, 22194, 25326, 25893, 27537, 34524, 36716, 37989, 44388, 50652, 51786, 55074, 64253, 75978, 77679, 82611, 103572, 110148, 128506, 151956, 155358, 165222, 192759, 247833, 257012, 310716, 330444, 385518, 495666, 578277, 743499, 771036, 991332, 1156554, 1486998, 1734831, 2313108, 2973996, 3469662, 5204493, 6939324, 10408986, 20817972]

約数ペア:

[(1, 20817972), (2, 10408986), (3, 6939324), (4, 5204493), (6, 3469662), (7, 2973996), (9, 2313108), (12, 1734831), (14, 1486998), (18, 1156554), (21, 991332), (27, 771036), (28, 743499), (36, 578277), (42, 495666), (54, 385518), (63, 330444), (67, 310716), (81, 257012), (84, 247833), (108, 192759), (126, 165222), (134, 155358), (137, 151956), (162, 128506), (189, 110148), (201, 103572), (252, 82611), (268, 77679), (274, 75978), (324, 64253), (378, 55074), (402, 51786), (411, 50652), (469, 44388), (548, 37989), (567, 36716), (603, 34524), (756, 27537), (804, 25893), (822, 25326), (938, 22194), (959, 21708), (1134, 18358), (1206, 17262), (1233, 16884), (1407, 14796), (1644, 12663), (1809, 11508), (1876, 11097), (1918, 10854), (2268, 9179), (2412, 8631), (2466, 8442), (2814, 7398), (2877, 7236), (3618, 5754), (3699, 5628), (3836, 5427), (4221, 4932)]