256174720

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21067}}^1$

素因数の和:21105

約数の個数: 64

約数和(自身を含む): 644680800

約数和(自身を除く): 388506080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 2432, 3040, 6080, 12160, 21067, 42134, 84268, 105335, 168536, 210670, 337072, 400273, 421340, 674144, 800546, 842680, 1348288, 1601092, 1685360, 2001365, 2696576, 3202184, 3370720, 4002730, 6404368, 6741440, 8005460, 12808736, 13482880, 16010920, 25617472, 32021840, 51234944, 64043680, 128087360, 256174720]

約数ペア:

[(1, 256174720), (2, 128087360), (4, 64043680), (5, 51234944), (8, 32021840), (10, 25617472), (16, 16010920), (19, 13482880), (20, 12808736), (32, 8005460), (38, 6741440), (40, 6404368), (64, 4002730), (76, 3370720), (80, 3202184), (95, 2696576), (128, 2001365), (152, 1685360), (160, 1601092), (190, 1348288), (304, 842680), (320, 800546), (380, 674144), (608, 421340), (640, 400273), (760, 337072), (1216, 210670), (1520, 168536), (2432, 105335), (3040, 84268), (6080, 42134), (12160, 21067)]