20181618505

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{167}}^1\times {\mathrm{3923}}^1$

素因数の和:4257

約数の個数: 32

約数和(自身を含む): 25013899008

約数和(自身を除く): 4832280503

約数列:

[1, 5, 61, 101, 167, 305, 505, 835, 3923, 6161, 10187, 16867, 19615, 30805, 50935, 84335, 239303, 396223, 655141, 1028887, 1196515, 1981115, 3275705, 5144435, 24169603, 39963601, 66169241, 120848015, 199818005, 330846205, 4036323701, 20181618505]

約数ペア:

[(1, 20181618505), (5, 4036323701), (61, 330846205), (101, 199818005), (167, 120848015), (305, 66169241), (505, 39963601), (835, 24169603), (3923, 5144435), (6161, 3275705), (10187, 1981115), (16867, 1196515), (19615, 1028887), (30805, 655141), (50935, 396223), (84335, 239303)]