19781296

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{23327}}^1$

素因数の和:23388

約数の個数: 20

約数和(自身を含む): 39051072

約数和(自身を除く): 19269776

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 23327, 46654, 93308, 186616, 373232, 1236331, 2472662, 4945324, 9890648, 19781296]

約数ペア:

[(1, 19781296), (2, 9890648), (4, 4945324), (8, 2472662), (16, 1236331), (53, 373232), (106, 186616), (212, 93308), (424, 46654), (848, 23327)]