19845890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64019}}^1$

素因数の和:64057

約数の個数: 16

約数和(自身を含む): 36875520

約数和(自身を除く): 17029630

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64019, 128038, 320095, 640190, 1984589, 3969178, 9922945, 19845890]

約数ペア:

[(1, 19845890), (2, 9922945), (5, 3969178), (10, 1984589), (31, 640190), (62, 320095), (155, 128038), (310, 64019)]