21053900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1583}}^1$

素因数の和:1623

約数の個数: 72

約数和(自身を含む): 54996480

約数和(自身を除く): 33942580

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 133, 140, 175, 190, 266, 350, 380, 475, 532, 665, 700, 950, 1330, 1583, 1900, 2660, 3166, 3325, 6332, 6650, 7915, 11081, 13300, 15830, 22162, 30077, 31660, 39575, 44324, 55405, 60154, 79150, 110810, 120308, 150385, 158300, 210539, 221620, 277025, 300770, 421078, 554050, 601540, 751925, 842156, 1052695, 1108100, 1503850, 2105390, 3007700, 4210780, 5263475, 10526950, 21053900]

約数ペア:

[(1, 21053900), (2, 10526950), (4, 5263475), (5, 4210780), (7, 3007700), (10, 2105390), (14, 1503850), (19, 1108100), (20, 1052695), (25, 842156), (28, 751925), (35, 601540), (38, 554050), (50, 421078), (70, 300770), (76, 277025), (95, 221620), (100, 210539), (133, 158300), (140, 150385), (175, 120308), (190, 110810), (266, 79150), (350, 60154), (380, 55405), (475, 44324), (532, 39575), (665, 31660), (700, 30077), (950, 22162), (1330, 15830), (1583, 13300), (1900, 11081), (2660, 7915), (3166, 6650), (3325, 6332)]