80493940820

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1\times {\mathrm{81901}}^1$

素因数の和:82380

約数の個数: 48

約数和(自身を含む): 170659525008

約数和(自身を除く): 90165584188

約数列:

[1, 2, 4, 5, 10, 20, 157, 313, 314, 626, 628, 785, 1252, 1565, 1570, 3130, 3140, 6260, 49141, 81901, 98282, 163802, 196564, 245705, 327604, 409505, 491410, 819010, 982820, 1638020, 12858457, 25635013, 25716914, 51270026, 51433828, 64292285, 102540052, 128175065, 128584570, 256350130, 257169140, 512700260, 4024697041, 8049394082, 16098788164, 20123485205, 40246970410, 80493940820]

約数ペア:

[(1, 80493940820), (2, 40246970410), (4, 20123485205), (5, 16098788164), (10, 8049394082), (20, 4024697041), (157, 512700260), (313, 257169140), (314, 256350130), (626, 128584570), (628, 128175065), (785, 102540052), (1252, 64292285), (1565, 51433828), (1570, 51270026), (3130, 25716914), (3140, 25635013), (6260, 12858457), (49141, 1638020), (81901, 982820), (98282, 819010), (163802, 491410), (196564, 409505), (245705, 327604)]