21910960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{16111}}^1$

素因数の和:16141

約数の個数: 40

約数和(自身を含む): 53942976

約数和(自身を除く): 32032016

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 16111, 32222, 64444, 80555, 128888, 161110, 257776, 273887, 322220, 547774, 644440, 1095548, 1288880, 1369435, 2191096, 2738870, 4382192, 5477740, 10955480, 21910960]

約数ペア:

[(1, 21910960), (2, 10955480), (4, 5477740), (5, 4382192), (8, 2738870), (10, 2191096), (16, 1369435), (17, 1288880), (20, 1095548), (34, 644440), (40, 547774), (68, 322220), (80, 273887), (85, 257776), (136, 161110), (170, 128888), (272, 80555), (340, 64444), (680, 32222), (1360, 16111)]