19898590

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64189}}^1$

素因数の和:64227

約数の個数: 16

約数和(自身を含む): 36973440

約数和(自身を除く): 17074850

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64189, 128378, 320945, 641890, 1989859, 3979718, 9949295, 19898590]

約数ペア:

[(1, 19898590), (2, 9949295), (5, 3979718), (10, 1989859), (31, 641890), (62, 320945), (155, 128378), (310, 64189)]