78859100

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{4003}}^1$

素因数の和:4214

約数の個数: 36

約数和(自身を含む): 172035864

約数和(自身を除く): 93176764

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1970, 3940, 4003, 4925, 8006, 9850, 16012, 19700, 20015, 40030, 80060, 100075, 200150, 400300, 788591, 1577182, 3154364, 3942955, 7885910, 15771820, 19714775, 39429550, 78859100]

約数ペア:

[(1, 78859100), (2, 39429550), (4, 19714775), (5, 15771820), (10, 7885910), (20, 3942955), (25, 3154364), (50, 1577182), (100, 788591), (197, 400300), (394, 200150), (788, 100075), (985, 80060), (1970, 40030), (3940, 20015), (4003, 19700), (4925, 16012), (8006, 9850)]