640540807720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21211}}^1\times {\mathrm{68633}}^1$

素因数の和:89866

約数の個数: 64

約数和(自身を含む): 1572333560640

約数和(自身を除く): 931792752920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 21211, 42422, 68633, 84844, 106055, 137266, 169688, 212110, 233321, 274532, 343165, 424220, 466642, 549064, 686330, 754963, 848440, 933284, 1166605, 1372660, 1509926, 1866568, 2333210, 2745320, 3019852, 3774815, 4666420, 6039704, 7549630, 9332840, 15099260, 30198520, 1455774563, 2911549126, 5823098252, 7278872815, 11646196504, 14557745630, 16013520193, 29115491260, 32027040386, 58230982520, 64054080772, 80067600965, 128108161544, 160135201930, 320270403860, 640540807720]

約数ペア:

[(1, 640540807720), (2, 320270403860), (4, 160135201930), (5, 128108161544), (8, 80067600965), (10, 64054080772), (11, 58230982520), (20, 32027040386), (22, 29115491260), (40, 16013520193), (44, 14557745630), (55, 11646196504), (88, 7278872815), (110, 5823098252), (220, 2911549126), (440, 1455774563), (21211, 30198520), (42422, 15099260), (68633, 9332840), (84844, 7549630), (106055, 6039704), (137266, 4666420), (169688, 3774815), (212110, 3019852), (233321, 2745320), (274532, 2333210), (343165, 1866568), (424220, 1509926), (466642, 1372660), (549064, 1166605), (686330, 933284), (754963, 848440)]