128403840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{66877}}^1$

素因数の和:66899

約数の個数: 64

約数和(自身を含む): 409293360

約数和(自身を除く): 280889520

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, 66877, 133754, 200631, 267508, 334385, 401262, 535016, 668770, 802524, 1003155, 1070032, 1337540, 1605048, 2006310, 2140064, 2675080, 3210096, 4012620, 4280128, 5350160, 6420192, 8025240, 8560256, 10700320, 12840384, 16050480, 21400640, 25680768, 32100960, 42801280, 64201920, 128403840]

約数ペア:

[(1, 128403840), (2, 64201920), (3, 42801280), (4, 32100960), (5, 25680768), (6, 21400640), (8, 16050480), (10, 12840384), (12, 10700320), (15, 8560256), (16, 8025240), (20, 6420192), (24, 5350160), (30, 4280128), (32, 4012620), (40, 3210096), (48, 2675080), (60, 2140064), (64, 2006310), (80, 1605048), (96, 1337540), (120, 1070032), (128, 1003155), (160, 802524), (192, 668770), (240, 535016), (320, 401262), (384, 334385), (480, 267508), (640, 200631), (960, 133754), (1920, 66877)]