20123781328

素因数分解:

$2^4\times 7^1\times {\mathrm{631}}^1\times {\mathrm{284749}}^1$

素因数の和:285395

約数の個数: 40

約数和(自身を含む): 44630576000

約数和(自身を除く): 24506794672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 631, 1262, 2524, 4417, 5048, 8834, 10096, 17668, 35336, 70672, 284749, 569498, 1138996, 1993243, 2277992, 3986486, 4555984, 7972972, 15945944, 31891888, 179676619, 359353238, 718706476, 1257736333, 1437412952, 2515472666, 2874825904, 5030945332, 10061890664, 20123781328]

約数ペア:

[(1, 20123781328), (2, 10061890664), (4, 5030945332), (7, 2874825904), (8, 2515472666), (14, 1437412952), (16, 1257736333), (28, 718706476), (56, 359353238), (112, 179676619), (631, 31891888), (1262, 15945944), (2524, 7972972), (4417, 4555984), (5048, 3986486), (8834, 2277992), (10096, 1993243), (17668, 1138996), (35336, 569498), (70672, 284749)]