28753137

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 55059840

約数和(自身を除く): 26306703

約数列:

[1, 3, 7, 9, 17, 19, 21, 27, 51, 57, 63, 81, 119, 133, 153, 157, 171, 189, 323, 357, 399, 459, 471, 513, 567, 969, 1071, 1099, 1197, 1377, 1413, 1539, 2261, 2669, 2907, 2983, 3213, 3297, 3591, 4239, 6783, 8007, 8721, 8949, 9639, 9891, 10773, 12717, 18683, 20349, 20881, 24021, 26163, 26847, 29673, 50711, 56049, 61047, 62643, 72063, 80541, 89019, 152133, 168147, 183141, 187929, 216189, 241623, 354977, 456399, 504441, 563787, 1064931, 1369197, 1513323, 1691361, 3194793, 4107591, 9584379, 28753137]

約数ペア:

[(1, 28753137), (3, 9584379), (7, 4107591), (9, 3194793), (17, 1691361), (19, 1513323), (21, 1369197), (27, 1064931), (51, 563787), (57, 504441), (63, 456399), (81, 354977), (119, 241623), (133, 216189), (153, 187929), (157, 183141), (171, 168147), (189, 152133), (323, 89019), (357, 80541), (399, 72063), (459, 62643), (471, 61047), (513, 56049), (567, 50711), (969, 29673), (1071, 26847), (1099, 26163), (1197, 24021), (1377, 20881), (1413, 20349), (1539, 18683), (2261, 12717), (2669, 10773), (2907, 9891), (2983, 9639), (3213, 8949), (3297, 8721), (3591, 8007), (4239, 6783)]