20956920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10273}}^1$

素因数の和:10304

約数の個数: 64

約数和(自身を含む): 66575520

約数和(自身を除く): 45618600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10273, 20546, 30819, 41092, 51365, 61638, 82184, 102730, 123276, 154095, 174641, 205460, 246552, 308190, 349282, 410920, 523923, 616380, 698564, 873205, 1047846, 1232760, 1397128, 1746410, 2095692, 2619615, 3492820, 4191384, 5239230, 6985640, 10478460, 20956920]

約数ペア:

[(1, 20956920), (2, 10478460), (3, 6985640), (4, 5239230), (5, 4191384), (6, 3492820), (8, 2619615), (10, 2095692), (12, 1746410), (15, 1397128), (17, 1232760), (20, 1047846), (24, 873205), (30, 698564), (34, 616380), (40, 523923), (51, 410920), (60, 349282), (68, 308190), (85, 246552), (102, 205460), (120, 174641), (136, 154095), (170, 123276), (204, 102730), (255, 82184), (340, 61638), (408, 51365), (510, 41092), (680, 30819), (1020, 20546), (2040, 10273)]