20211451250

素因数分解:

$2^1\times 5^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{16349}}^1$

素因数の和:16437

約数の個数: 80

約数和(自身を含む): 40453300800

約数和(自身を除く): 20241849550

約数列:

[1, 2, 5, 10, 23, 25, 43, 46, 50, 86, 115, 125, 215, 230, 250, 430, 575, 625, 989, 1075, 1150, 1250, 1978, 2150, 2875, 4945, 5375, 5750, 9890, 10750, 14375, 16349, 24725, 26875, 28750, 32698, 49450, 53750, 81745, 123625, 163490, 247250, 376027, 408725, 618125, 703007, 752054, 817450, 1236250, 1406014, 1880135, 2043625, 3515035, 3760270, 4087250, 7030070, 9400675, 10218125, 16169161, 17575175, 18801350, 20436250, 32338322, 35150350, 47003375, 80845805, 87875875, 94006750, 161691610, 175751750, 235016875, 404229025, 439379375, 470033750, 808458050, 878758750, 2021145125, 4042290250, 10105725625, 20211451250]

約数ペア:

[(1, 20211451250), (2, 10105725625), (5, 4042290250), (10, 2021145125), (23, 878758750), (25, 808458050), (43, 470033750), (46, 439379375), (50, 404229025), (86, 235016875), (115, 175751750), (125, 161691610), (215, 94006750), (230, 87875875), (250, 80845805), (430, 47003375), (575, 35150350), (625, 32338322), (989, 20436250), (1075, 18801350), (1150, 17575175), (1250, 16169161), (1978, 10218125), (2150, 9400675), (2875, 7030070), (4945, 4087250), (5375, 3760270), (5750, 3515035), (9890, 2043625), (10750, 1880135), (14375, 1406014), (16349, 1236250), (24725, 817450), (26875, 752054), (28750, 703007), (32698, 618125), (49450, 408725), (53750, 376027), (81745, 247250), (123625, 163490)]