20278728

素因数分解:

$2^3\times 3^3\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:659

約数の個数: 64

約数和(自身を含む): 56716800

約数和(自身を除く): 36438072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 223, 421, 446, 669, 842, 892, 1263, 1338, 1684, 1784, 2007, 2526, 2676, 3368, 3789, 4014, 5052, 5352, 6021, 7578, 8028, 10104, 11367, 12042, 15156, 16056, 22734, 24084, 30312, 45468, 48168, 90936, 93883, 187766, 281649, 375532, 563298, 751064, 844947, 1126596, 1689894, 2253192, 2534841, 3379788, 5069682, 6759576, 10139364, 20278728]

約数ペア:

[(1, 20278728), (2, 10139364), (3, 6759576), (4, 5069682), (6, 3379788), (8, 2534841), (9, 2253192), (12, 1689894), (18, 1126596), (24, 844947), (27, 751064), (36, 563298), (54, 375532), (72, 281649), (108, 187766), (216, 93883), (223, 90936), (421, 48168), (446, 45468), (669, 30312), (842, 24084), (892, 22734), (1263, 16056), (1338, 15156), (1684, 12042), (1784, 11367), (2007, 10104), (2526, 8028), (2676, 7578), (3368, 6021), (3789, 5352), (4014, 5052)]