21638838

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{277421}}^1$

素因数の和:277439

約数の個数: 16

約数和(自身を含む): 46606896

約数和(自身を除く): 24968058

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 277421, 554842, 832263, 1664526, 3606473, 7212946, 10819419, 21638838]

約数ペア:

[(1, 21638838), (2, 10819419), (3, 7212946), (6, 3606473), (13, 1664526), (26, 832263), (39, 554842), (78, 277421)]