209818540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{5051}}^1$

素因数の和:5158

約数の個数: 48

約数和(自身を含む): 461712384

約数和(自身を除く): 251893844

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 268, 310, 335, 620, 670, 1340, 2077, 4154, 5051, 8308, 10102, 10385, 20204, 20770, 25255, 41540, 50510, 101020, 156581, 313162, 338417, 626324, 676834, 782905, 1353668, 1565810, 1692085, 3131620, 3384170, 6768340, 10490927, 20981854, 41963708, 52454635, 104909270, 209818540]

約数ペア:

[(1, 209818540), (2, 104909270), (4, 52454635), (5, 41963708), (10, 20981854), (20, 10490927), (31, 6768340), (62, 3384170), (67, 3131620), (124, 1692085), (134, 1565810), (155, 1353668), (268, 782905), (310, 676834), (335, 626324), (620, 338417), (670, 313162), (1340, 156581), (2077, 101020), (4154, 50510), (5051, 41540), (8308, 25255), (10102, 20770), (10385, 20204)]