21980055

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{331}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 37290240

約数和(自身を除く): 15310185

約数列:

[1, 3, 5, 15, 19, 57, 95, 233, 285, 331, 699, 993, 1165, 1655, 3495, 4427, 4965, 6289, 13281, 18867, 22135, 31445, 66405, 77123, 94335, 231369, 385615, 1156845, 1465337, 4396011, 7326685, 21980055]

約数ペア:

[(1, 21980055), (3, 7326685), (5, 4396011), (15, 1465337), (19, 1156845), (57, 385615), (95, 231369), (233, 94335), (285, 77123), (331, 66405), (699, 31445), (993, 22135), (1165, 18867), (1655, 13281), (3495, 6289), (4427, 4965)]