1277281920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{665251}}^1$

素因数の和:665273

約数の個数: 64

約数和(自身を含む): 4071342240

約数和(自身を除く): 2794060320

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, 320, 384, 480, 640, 960, 1920, 665251, 1330502, 1995753, 2661004, 3326255, 3991506, 5322008, 6652510, 7983012, 9978765, 10644016, 13305020, 15966024, 19957530, 21288032, 26610040, 31932048, 39915060, 42576064, 53220080, 63864096, 79830120, 85152128, 106440160, 127728192, 159660240, 212880320, 255456384, 319320480, 425760640, 638640960, 1277281920]

約数ペア:

[(1, 1277281920), (2, 638640960), (3, 425760640), (4, 319320480), (5, 255456384), (6, 212880320), (8, 159660240), (10, 127728192), (12, 106440160), (15, 85152128), (16, 79830120), (20, 63864096), (24, 53220080), (30, 42576064), (32, 39915060), (40, 31932048), (48, 26610040), (60, 21288032), (64, 19957530), (80, 15966024), (96, 13305020), (120, 10644016), (128, 9978765), (160, 7983012), (192, 6652510), (240, 5322008), (320, 3991506), (384, 3326255), (480, 2661004), (640, 1995753), (960, 1330502), (1920, 665251)]