61780520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{49823}}^1$

素因数の和:49865

約数の個数: 32

約数和(自身を含む): 143493120

約数和(自身を除く): 81712600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 49823, 99646, 199292, 249115, 398584, 498230, 996460, 1544513, 1992920, 3089026, 6178052, 7722565, 12356104, 15445130, 30890260, 61780520]

約数ペア:

[(1, 61780520), (2, 30890260), (4, 15445130), (5, 12356104), (8, 7722565), (10, 6178052), (20, 3089026), (31, 1992920), (40, 1544513), (62, 996460), (124, 498230), (155, 398584), (248, 249115), (310, 199292), (620, 99646), (1240, 49823)]