1728380720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{11353}}^1$

素因数の和:11550

約数の個数: 80

約数和(自身を含む): 4409530272

約数和(自身を除く): 2681149552

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 173, 176, 220, 346, 440, 692, 865, 880, 1384, 1730, 1903, 2768, 3460, 3806, 6920, 7612, 9515, 11353, 13840, 15224, 19030, 22706, 30448, 38060, 45412, 56765, 76120, 90824, 113530, 124883, 152240, 181648, 227060, 249766, 454120, 499532, 624415, 908240, 999064, 1248830, 1964069, 1998128, 2497660, 3928138, 4995320, 7856276, 9820345, 9990640, 15712552, 19640690, 21604759, 31425104, 39281380, 43209518, 78562760, 86419036, 108023795, 157125520, 172838072, 216047590, 345676144, 432095180, 864190360, 1728380720]

約数ペア:

[(1, 1728380720), (2, 864190360), (4, 432095180), (5, 345676144), (8, 216047590), (10, 172838072), (11, 157125520), (16, 108023795), (20, 86419036), (22, 78562760), (40, 43209518), (44, 39281380), (55, 31425104), (80, 21604759), (88, 19640690), (110, 15712552), (173, 9990640), (176, 9820345), (220, 7856276), (346, 4995320), (440, 3928138), (692, 2497660), (865, 1998128), (880, 1964069), (1384, 1248830), (1730, 999064), (1903, 908240), (2768, 624415), (3460, 499532), (3806, 454120), (6920, 249766), (7612, 227060), (9515, 181648), (11353, 152240), (13840, 124883), (15224, 113530), (19030, 90824), (22706, 76120), (30448, 56765), (38060, 45412)]