21708241520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38764717}}^1$

素因数の和:38764737

約数の個数: 40

約数和(自身を含む): 57681900384

約数和(自身を除く): 35973658864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38764717, 77529434, 155058868, 193823585, 271353019, 310117736, 387647170, 542706038, 620235472, 775294340, 1085412076, 1356765095, 1550588680, 2170824152, 2713530190, 3101177360, 4341648304, 5427060380, 10854120760, 21708241520]

約数ペア:

[(1, 21708241520), (2, 10854120760), (4, 5427060380), (5, 4341648304), (7, 3101177360), (8, 2713530190), (10, 2170824152), (14, 1550588680), (16, 1356765095), (20, 1085412076), (28, 775294340), (35, 620235472), (40, 542706038), (56, 387647170), (70, 310117736), (80, 271353019), (112, 193823585), (140, 155058868), (280, 77529434), (560, 38764717)]