31499247

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 47190528

約数和(自身を除く): 15691281

約数列:

[1, 3, 13, 37, 39, 83, 111, 249, 263, 481, 789, 1079, 1443, 3071, 3237, 3419, 9213, 9731, 10257, 21829, 29193, 39923, 65487, 119769, 126503, 283777, 379509, 807673, 851331, 2423019, 10499749, 31499247]

約数ペア:

[(1, 31499247), (3, 10499749), (13, 2423019), (37, 851331), (39, 807673), (83, 379509), (111, 283777), (249, 126503), (263, 119769), (481, 65487), (789, 39923), (1079, 29193), (1443, 21829), (3071, 10257), (3237, 9731), (3419, 9213)]