20871465840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28988147}}^1$

素因数の和:28988166

約数の個数: 60

約数和(自身を含む): 70093341864

約数和(自身を除く): 49221876024

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, 28988147, 57976294, 86964441, 115952588, 144940735, 173928882, 231905176, 260893323, 289881470, 347857764, 434822205, 463810352, 521786646, 579762940, 695715528, 869644410, 1043573292, 1159525880, 1304466615, 1391431056, 1739288820, 2087146584, 2319051760, 2608933230, 3478577640, 4174293168, 5217866460, 6957155280, 10435732920, 20871465840]

約数ペア:

[(1, 20871465840), (2, 10435732920), (3, 6957155280), (4, 5217866460), (5, 4174293168), (6, 3478577640), (8, 2608933230), (9, 2319051760), (10, 2087146584), (12, 1739288820), (15, 1391431056), (16, 1304466615), (18, 1159525880), (20, 1043573292), (24, 869644410), (30, 695715528), (36, 579762940), (40, 521786646), (45, 463810352), (48, 434822205), (60, 347857764), (72, 289881470), (80, 260893323), (90, 231905176), (120, 173928882), (144, 144940735), (180, 115952588), (240, 86964441), (360, 57976294), (720, 28988147)]