18661428

素因数分解:

$2^2\times 3^5\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 49777728

約数和(自身を除く): 31116300

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 73, 81, 108, 146, 162, 219, 243, 263, 292, 324, 438, 486, 526, 657, 789, 876, 972, 1052, 1314, 1578, 1971, 2367, 2628, 3156, 3942, 4734, 5913, 7101, 7884, 9468, 11826, 14202, 17739, 19199, 21303, 23652, 28404, 35478, 38398, 42606, 57597, 63909, 70956, 76796, 85212, 115194, 127818, 172791, 230388, 255636, 345582, 518373, 691164, 1036746, 1555119, 2073492, 3110238, 4665357, 6220476, 9330714, 18661428]

約数ペア:

[(1, 18661428), (2, 9330714), (3, 6220476), (4, 4665357), (6, 3110238), (9, 2073492), (12, 1555119), (18, 1036746), (27, 691164), (36, 518373), (54, 345582), (73, 255636), (81, 230388), (108, 172791), (146, 127818), (162, 115194), (219, 85212), (243, 76796), (263, 70956), (292, 63909), (324, 57597), (438, 42606), (486, 38398), (526, 35478), (657, 28404), (789, 23652), (876, 21303), (972, 19199), (1052, 17739), (1314, 14202), (1578, 11826), (1971, 9468), (2367, 7884), (2628, 7101), (3156, 5913), (3942, 4734)]