20511830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1213}}^1$

素因数の和:1328

約数の個数: 32

約数和(自身を含む): 39333600

約数和(自身を除く): 18821770

約数列:

[1, 2, 5, 10, 19, 38, 89, 95, 178, 190, 445, 890, 1213, 1691, 2426, 3382, 6065, 8455, 12130, 16910, 23047, 46094, 107957, 115235, 215914, 230470, 539785, 1079570, 2051183, 4102366, 10255915, 20511830]

約数ペア:

[(1, 20511830), (2, 10255915), (5, 4102366), (10, 2051183), (19, 1079570), (38, 539785), (89, 230470), (95, 215914), (178, 115235), (190, 107957), (445, 46094), (890, 23047), (1213, 16910), (1691, 12130), (2426, 8455), (3382, 6065)]