90878858

素因数分解:

$2^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 158868864

約数和(自身を除く): 67990006

約数列:

[1, 2, 7, 14, 83, 166, 197, 394, 397, 581, 794, 1162, 1379, 2758, 2779, 5558, 16351, 32702, 32951, 65902, 78209, 114457, 156418, 228914, 230657, 461314, 547463, 1094926, 6491347, 12982694, 45439429, 90878858]

約数ペア:

[(1, 90878858), (2, 45439429), (7, 12982694), (14, 6491347), (83, 1094926), (166, 547463), (197, 461314), (394, 230657), (397, 228914), (581, 156418), (794, 114457), (1162, 78209), (1379, 65902), (2758, 32951), (2779, 32702), (5558, 16351)]