21769070

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:476

約数の個数: 32

約数和(自身を含む): 40283136

約数和(自身を除く): 18514066

約数列:

[1, 2, 5, 10, 61, 122, 127, 254, 281, 305, 562, 610, 635, 1270, 1405, 2810, 7747, 15494, 17141, 34282, 35687, 38735, 71374, 77470, 85705, 171410, 178435, 356870, 2176907, 4353814, 10884535, 21769070]

約数ペア:

[(1, 21769070), (2, 10884535), (5, 4353814), (10, 2176907), (61, 356870), (122, 178435), (127, 171410), (254, 85705), (281, 77470), (305, 71374), (562, 38735), (610, 35687), (635, 34282), (1270, 17141), (1405, 15494), (2810, 7747)]