161987508

素因数分解:

$2^2\times 3^2\times {\mathrm{67}}^1\times {\mathrm{239}}^1\times {\mathrm{281}}^1$

素因数の和:597

約数の個数: 72

約数和(自身を含む): 418803840

約数和(自身を除く): 256816332

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 67, 134, 201, 239, 268, 281, 402, 478, 562, 603, 717, 804, 843, 956, 1124, 1206, 1434, 1686, 2151, 2412, 2529, 2868, 3372, 4302, 5058, 8604, 10116, 16013, 18827, 32026, 37654, 48039, 56481, 64052, 67159, 75308, 96078, 112962, 134318, 144117, 169443, 192156, 201477, 225924, 268636, 288234, 338886, 402954, 576468, 604431, 677772, 805908, 1208862, 2417724, 4499653, 8999306, 13498959, 17998612, 26997918, 40496877, 53995836, 80993754, 161987508]

約数ペア:

[(1, 161987508), (2, 80993754), (3, 53995836), (4, 40496877), (6, 26997918), (9, 17998612), (12, 13498959), (18, 8999306), (36, 4499653), (67, 2417724), (134, 1208862), (201, 805908), (239, 677772), (268, 604431), (281, 576468), (402, 402954), (478, 338886), (562, 288234), (603, 268636), (717, 225924), (804, 201477), (843, 192156), (956, 169443), (1124, 144117), (1206, 134318), (1434, 112962), (1686, 96078), (2151, 75308), (2412, 67159), (2529, 64052), (2868, 56481), (3372, 48039), (4302, 37654), (5058, 32026), (8604, 18827), (10116, 16013)]