81891840

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{10663}}^1$

素因数の和:10689

約数の個数: 80

約数和(自身を含む): 261822528

約数和(自身を除く): 179930688

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, 768, 960, 1280, 1536, 1920, 2560, 3840, 7680, 10663, 21326, 31989, 42652, 53315, 63978, 85304, 106630, 127956, 159945, 170608, 213260, 255912, 319890, 341216, 426520, 511824, 639780, 682432, 853040, 1023648, 1279560, 1364864, 1706080, 2047296, 2559120, 2729728, 3412160, 4094592, 5118240, 5459456, 6824320, 8189184, 10236480, 13648640, 16378368, 20472960, 27297280, 40945920, 81891840]

約数ペア:

[(1, 81891840), (2, 40945920), (3, 27297280), (4, 20472960), (5, 16378368), (6, 13648640), (8, 10236480), (10, 8189184), (12, 6824320), (15, 5459456), (16, 5118240), (20, 4094592), (24, 3412160), (30, 2729728), (32, 2559120), (40, 2047296), (48, 1706080), (60, 1364864), (64, 1279560), (80, 1023648), (96, 853040), (120, 682432), (128, 639780), (160, 511824), (192, 426520), (240, 341216), (256, 319890), (320, 255912), (384, 213260), (480, 170608), (512, 159945), (640, 127956), (768, 106630), (960, 85304), (1280, 63978), (1536, 53315), (1920, 42652), (2560, 31989), (3840, 21326), (7680, 10663)]