20571750350

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{198091}}^1$

素因数の和:198201

約数の個数: 48

約数和(自身を含む): 40087481856

約数和(自身を除く): 19515731506

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 67, 134, 155, 310, 335, 670, 775, 1550, 1675, 2077, 3350, 4154, 10385, 20770, 51925, 103850, 198091, 396182, 990455, 1980910, 4952275, 6140821, 9904550, 12281642, 13272097, 26544194, 30704105, 61408210, 66360485, 132720970, 153520525, 307041050, 331802425, 411435007, 663604850, 822870014, 2057175035, 4114350070, 10285875175, 20571750350]

約数ペア:

[(1, 20571750350), (2, 10285875175), (5, 4114350070), (10, 2057175035), (25, 822870014), (31, 663604850), (50, 411435007), (62, 331802425), (67, 307041050), (134, 153520525), (155, 132720970), (310, 66360485), (335, 61408210), (670, 30704105), (775, 26544194), (1550, 13272097), (1675, 12281642), (2077, 9904550), (3350, 6140821), (4154, 4952275), (10385, 1980910), (20770, 990455), (51925, 396182), (103850, 198091)]