81393240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2579}}^1$

素因数の和:2856

約数の個数: 64

約数和(自身を含む): 245203200

約数和(自身を除く): 163809960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 263, 526, 789, 1052, 1315, 1578, 2104, 2579, 2630, 3156, 3945, 5158, 5260, 6312, 7737, 7890, 10316, 10520, 12895, 15474, 15780, 20632, 25790, 30948, 31560, 38685, 51580, 61896, 77370, 103160, 154740, 309480, 678277, 1356554, 2034831, 2713108, 3391385, 4069662, 5426216, 6782770, 8139324, 10174155, 13565540, 16278648, 20348310, 27131080, 40696620, 81393240]

約数ペア:

[(1, 81393240), (2, 40696620), (3, 27131080), (4, 20348310), (5, 16278648), (6, 13565540), (8, 10174155), (10, 8139324), (12, 6782770), (15, 5426216), (20, 4069662), (24, 3391385), (30, 2713108), (40, 2034831), (60, 1356554), (120, 678277), (263, 309480), (526, 154740), (789, 103160), (1052, 77370), (1315, 61896), (1578, 51580), (2104, 38685), (2579, 31560), (2630, 30948), (3156, 25790), (3945, 20632), (5158, 15780), (5260, 15474), (6312, 12895), (7737, 10520), (7890, 10316)]