31901320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72503}}^1$

素因数の和:72525

約数の個数: 32

約数和(自身を含む): 78304320

約数和(自身を除く): 46403000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 72503, 145006, 290012, 362515, 580024, 725030, 797533, 1450060, 1595066, 2900120, 3190132, 3987665, 6380264, 7975330, 15950660, 31901320]

約数ペア:

[(1, 31901320), (2, 15950660), (4, 7975330), (5, 6380264), (8, 3987665), (10, 3190132), (11, 2900120), (20, 1595066), (22, 1450060), (40, 797533), (44, 725030), (55, 580024), (88, 362515), (110, 290012), (220, 145006), (440, 72503)]