21554240

素因数分解:

$2^6\times 5^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:559

約数の個数: 56

約数和(自身を含む): 51739800

約数和(自身を除く): 30185560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 193, 320, 349, 386, 698, 772, 965, 1396, 1544, 1745, 1930, 2792, 3088, 3490, 3860, 5584, 6176, 6980, 7720, 11168, 12352, 13960, 15440, 22336, 27920, 30880, 55840, 61760, 67357, 111680, 134714, 269428, 336785, 538856, 673570, 1077712, 1347140, 2155424, 2694280, 4310848, 5388560, 10777120, 21554240]

約数ペア:

[(1, 21554240), (2, 10777120), (4, 5388560), (5, 4310848), (8, 2694280), (10, 2155424), (16, 1347140), (20, 1077712), (32, 673570), (40, 538856), (64, 336785), (80, 269428), (160, 134714), (193, 111680), (320, 67357), (349, 61760), (386, 55840), (698, 30880), (772, 27920), (965, 22336), (1396, 15440), (1544, 13960), (1745, 12352), (1930, 11168), (2792, 7720), (3088, 6980), (3490, 6176), (3860, 5584)]