123328640

素因数分解:

$2^7\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1471}}^1$

素因数の和:1621

約数の個数: 64

約数和(自身を含む): 297285120

約数和(自身を除く): 173956480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 131, 160, 262, 320, 524, 640, 655, 1048, 1310, 1471, 2096, 2620, 2942, 4192, 5240, 5884, 7355, 8384, 10480, 11768, 14710, 16768, 20960, 23536, 29420, 41920, 47072, 58840, 83840, 94144, 117680, 188288, 192701, 235360, 385402, 470720, 770804, 941440, 963505, 1541608, 1927010, 3083216, 3854020, 6166432, 7708040, 12332864, 15416080, 24665728, 30832160, 61664320, 123328640]

約数ペア:

[(1, 123328640), (2, 61664320), (4, 30832160), (5, 24665728), (8, 15416080), (10, 12332864), (16, 7708040), (20, 6166432), (32, 3854020), (40, 3083216), (64, 1927010), (80, 1541608), (128, 963505), (131, 941440), (160, 770804), (262, 470720), (320, 385402), (524, 235360), (640, 192701), (655, 188288), (1048, 117680), (1310, 94144), (1471, 83840), (2096, 58840), (2620, 47072), (2942, 41920), (4192, 29420), (5240, 23536), (5884, 20960), (7355, 16768), (8384, 14710), (10480, 11768)]