19390100

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{2731}}^1$

素因数の和:2816

約数の個数: 36

約数和(自身を含む): 42684768

約数和(自身を除く): 23294668

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 2731, 3550, 5462, 7100, 10924, 13655, 27310, 54620, 68275, 136550, 193901, 273100, 387802, 775604, 969505, 1939010, 3878020, 4847525, 9695050, 19390100]

約数ペア:

[(1, 19390100), (2, 9695050), (4, 4847525), (5, 3878020), (10, 1939010), (20, 969505), (25, 775604), (50, 387802), (71, 273100), (100, 193901), (142, 136550), (284, 68275), (355, 54620), (710, 27310), (1420, 13655), (1775, 10924), (2731, 7100), (3550, 5462)]