31393225

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 44193600

約数和(自身を除く): 12800375

約数列:

[1, 5, 19, 25, 29, 43, 53, 95, 145, 215, 265, 475, 551, 725, 817, 1007, 1075, 1247, 1325, 1537, 2279, 2755, 4085, 5035, 6235, 7685, 11395, 13775, 20425, 23693, 25175, 29203, 31175, 38425, 43301, 56975, 66091, 118465, 146015, 216505, 330455, 592325, 730075, 1082525, 1255729, 1652275, 6278645, 31393225]

約数ペア:

[(1, 31393225), (5, 6278645), (19, 1652275), (25, 1255729), (29, 1082525), (43, 730075), (53, 592325), (95, 330455), (145, 216505), (215, 146015), (265, 118465), (475, 66091), (551, 56975), (725, 43301), (817, 38425), (1007, 31175), (1075, 29203), (1247, 25175), (1325, 23693), (1537, 20425), (2279, 13775), (2755, 11395), (4085, 7685), (5035, 6235)]