20981128

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{22039}}^1$

素因数の和:22069

約数の個数: 32

約数和(自身を含む): 47606400

約数和(自身を除く): 26625272

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 238, 476, 952, 22039, 44078, 88156, 154273, 176312, 308546, 374663, 617092, 749326, 1234184, 1498652, 2622641, 2997304, 5245282, 10490564, 20981128]

約数ペア:

[(1, 20981128), (2, 10490564), (4, 5245282), (7, 2997304), (8, 2622641), (14, 1498652), (17, 1234184), (28, 749326), (34, 617092), (56, 374663), (68, 308546), (119, 176312), (136, 154273), (238, 88156), (476, 44078), (952, 22039)]