19799830

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22247}}^1$

素因数の和:22343

約数の個数: 16

約数和(自身を含む): 36041760

約数和(自身を除く): 16241930

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 22247, 44494, 111235, 222470, 1979983, 3959966, 9899915, 19799830]

約数ペア:

[(1, 19799830), (2, 9899915), (5, 3959966), (10, 1979983), (89, 222470), (178, 111235), (445, 44494), (890, 22247)]