28920980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2797}}^1$

素因数の和:2864

約数の個数: 48

約数和(自身を含む): 67689216

約数和(自身を除く): 38768236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 470, 517, 940, 1034, 2068, 2585, 2797, 5170, 5594, 10340, 11188, 13985, 27970, 30767, 55940, 61534, 123068, 131459, 153835, 262918, 307670, 525836, 615340, 657295, 1314590, 1446049, 2629180, 2892098, 5784196, 7230245, 14460490, 28920980]

約数ペア:

[(1, 28920980), (2, 14460490), (4, 7230245), (5, 5784196), (10, 2892098), (11, 2629180), (20, 1446049), (22, 1314590), (44, 657295), (47, 615340), (55, 525836), (94, 307670), (110, 262918), (188, 153835), (220, 131459), (235, 123068), (470, 61534), (517, 55940), (940, 30767), (1034, 27970), (2068, 13985), (2585, 11188), (2797, 10340), (5170, 5594)]