16990220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{647}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 38864448

約数和(自身を除く): 21874228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 647, 1010, 1294, 1313, 2020, 2588, 2626, 3235, 5252, 6470, 6565, 8411, 12940, 13130, 16822, 26260, 33644, 42055, 65347, 84110, 130694, 168220, 261388, 326735, 653470, 849511, 1306940, 1699022, 3398044, 4247555, 8495110, 16990220]

約数ペア:

[(1, 16990220), (2, 8495110), (4, 4247555), (5, 3398044), (10, 1699022), (13, 1306940), (20, 849511), (26, 653470), (52, 326735), (65, 261388), (101, 168220), (130, 130694), (202, 84110), (260, 65347), (404, 42055), (505, 33644), (647, 26260), (1010, 16822), (1294, 13130), (1313, 12940), (2020, 8411), (2588, 6565), (2626, 6470), (3235, 5252)]