20985840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29147}}^1$

素因数の和:29166

約数の個数: 60

約数和(自身を含む): 70479864

約数和(自身を除く): 49494024

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29147, 58294, 87441, 116588, 145735, 174882, 233176, 262323, 291470, 349764, 437205, 466352, 524646, 582940, 699528, 874410, 1049292, 1165880, 1311615, 1399056, 1748820, 2098584, 2331760, 2623230, 3497640, 4197168, 5246460, 6995280, 10492920, 20985840]

約数ペア:

[(1, 20985840), (2, 10492920), (3, 6995280), (4, 5246460), (5, 4197168), (6, 3497640), (8, 2623230), (9, 2331760), (10, 2098584), (12, 1748820), (15, 1399056), (16, 1311615), (18, 1165880), (20, 1049292), (24, 874410), (30, 699528), (36, 582940), (40, 524646), (45, 466352), (48, 437205), (60, 349764), (72, 291470), (80, 262323), (90, 233176), (120, 174882), (144, 145735), (180, 116588), (240, 87441), (360, 58294), (720, 29147)]