20293080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{643}}^1$

素因数の和:920

約数の個数: 64

約数和(自身を含む): 61205760

約数和(自身を除く): 40912680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 263, 526, 643, 789, 1052, 1286, 1315, 1578, 1929, 2104, 2572, 2630, 3156, 3215, 3858, 3945, 5144, 5260, 6312, 6430, 7716, 7890, 9645, 10520, 12860, 15432, 15780, 19290, 25720, 31560, 38580, 77160, 169109, 338218, 507327, 676436, 845545, 1014654, 1352872, 1691090, 2029308, 2536635, 3382180, 4058616, 5073270, 6764360, 10146540, 20293080]

約数ペア:

[(1, 20293080), (2, 10146540), (3, 6764360), (4, 5073270), (5, 4058616), (6, 3382180), (8, 2536635), (10, 2029308), (12, 1691090), (15, 1352872), (20, 1014654), (24, 845545), (30, 676436), (40, 507327), (60, 338218), (120, 169109), (263, 77160), (526, 38580), (643, 31560), (789, 25720), (1052, 19290), (1286, 15780), (1315, 15432), (1578, 12860), (1929, 10520), (2104, 9645), (2572, 7890), (2630, 7716), (3156, 6430), (3215, 6312), (3858, 5260), (3945, 5144)]