16991920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19309}}^1$

素因数の和:19333

約数の個数: 40

約数和(自身を含む): 43099920

約数和(自身を除く): 26108000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 19309, 38618, 77236, 96545, 154472, 193090, 212399, 308944, 386180, 424798, 772360, 849596, 1061995, 1544720, 1699192, 2123990, 3398384, 4247980, 8495960, 16991920]

約数ペア:

[(1, 16991920), (2, 8495960), (4, 4247980), (5, 3398384), (8, 2123990), (10, 1699192), (11, 1544720), (16, 1061995), (20, 849596), (22, 772360), (40, 424798), (44, 386180), (55, 308944), (80, 212399), (88, 193090), (110, 154472), (176, 96545), (220, 77236), (440, 38618), (880, 19309)]