78640840

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{23687}}^1$

素因数の和:23781

約数の個数: 32

約数和(自身を含む): 179081280

約数和(自身を除く): 100440440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 23687, 47374, 94748, 118435, 189496, 236870, 473740, 947480, 1966021, 3932042, 7864084, 9830105, 15728168, 19660210, 39320420, 78640840]

約数ペア:

[(1, 78640840), (2, 39320420), (4, 19660210), (5, 15728168), (8, 9830105), (10, 7864084), (20, 3932042), (40, 1966021), (83, 947480), (166, 473740), (332, 236870), (415, 189496), (664, 118435), (830, 94748), (1660, 47374), (3320, 23687)]