20305920

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{661}}^1$

素因数の和:691

約数の個数: 96

約数和(自身を含む): 65061360

約数和(自身を除く): 44755440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 661, 768, 960, 1024, 1280, 1322, 1536, 1920, 1983, 2048, 2560, 2644, 3072, 3305, 3840, 3966, 5120, 5288, 6144, 6610, 7680, 7932, 9915, 10240, 10576, 13220, 15360, 15864, 19830, 21152, 26440, 30720, 31728, 39660, 42304, 52880, 63456, 79320, 84608, 105760, 126912, 158640, 169216, 211520, 253824, 317280, 338432, 423040, 507648, 634560, 676864, 846080, 1015296, 1269120, 1353728, 1692160, 2030592, 2538240, 3384320, 4061184, 5076480, 6768640, 10152960, 20305920]

約数ペア:

[(1, 20305920), (2, 10152960), (3, 6768640), (4, 5076480), (5, 4061184), (6, 3384320), (8, 2538240), (10, 2030592), (12, 1692160), (15, 1353728), (16, 1269120), (20, 1015296), (24, 846080), (30, 676864), (32, 634560), (40, 507648), (48, 423040), (60, 338432), (64, 317280), (80, 253824), (96, 211520), (120, 169216), (128, 158640), (160, 126912), (192, 105760), (240, 84608), (256, 79320), (320, 63456), (384, 52880), (480, 42304), (512, 39660), (640, 31728), (661, 30720), (768, 26440), (960, 21152), (1024, 19830), (1280, 15864), (1322, 15360), (1536, 13220), (1920, 10576), (1983, 10240), (2048, 9915), (2560, 7932), (2644, 7680), (3072, 6610), (3305, 6144), (3840, 5288), (3966, 5120)]