20864880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28979}}^1$

素因数の和:28998

約数の個数: 60

約数和(自身を含む): 70073640

約数和(自身を除く): 49208760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28979, 57958, 86937, 115916, 144895, 173874, 231832, 260811, 289790, 347748, 434685, 463664, 521622, 579580, 695496, 869370, 1043244, 1159160, 1304055, 1390992, 1738740, 2086488, 2318320, 2608110, 3477480, 4172976, 5216220, 6954960, 10432440, 20864880]

約数ペア:

[(1, 20864880), (2, 10432440), (3, 6954960), (4, 5216220), (5, 4172976), (6, 3477480), (8, 2608110), (9, 2318320), (10, 2086488), (12, 1738740), (15, 1390992), (16, 1304055), (18, 1159160), (20, 1043244), (24, 869370), (30, 695496), (36, 579580), (40, 521622), (45, 463664), (48, 434685), (60, 347748), (72, 289790), (80, 260811), (90, 231832), (120, 173874), (144, 144895), (180, 115916), (240, 86937), (360, 57958), (720, 28979)]