31821335

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 48799296

約数和(自身を除く): 16977961

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 97, 103, 245, 455, 485, 515, 637, 679, 721, 1261, 1339, 3185, 3395, 3605, 4753, 5047, 6305, 6695, 8827, 9373, 9991, 23765, 25235, 44135, 46865, 49955, 61789, 65611, 69937, 129883, 308945, 328055, 349685, 489559, 649415, 909181, 2447795, 4545905, 6364267, 31821335]

約数ペア:

[(1, 31821335), (5, 6364267), (7, 4545905), (13, 2447795), (35, 909181), (49, 649415), (65, 489559), (91, 349685), (97, 328055), (103, 308945), (245, 129883), (455, 69937), (485, 65611), (515, 61789), (637, 49955), (679, 46865), (721, 44135), (1261, 25235), (1339, 23765), (3185, 9991), (3395, 9373), (3605, 8827), (4753, 6695), (5047, 6305)]