20785097000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{670487}}^1$

素因数の和:670539

約数の個数: 64

約数和(自身を含む): 50206141440

約数和(自身を除く): 29421044440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 775, 1000, 1240, 1550, 3100, 3875, 6200, 7750, 15500, 31000, 670487, 1340974, 2681948, 3352435, 5363896, 6704870, 13409740, 16762175, 20785097, 26819480, 33524350, 41570194, 67048700, 83140388, 83810875, 103925485, 134097400, 166280776, 167621750, 207850970, 335243500, 415701940, 519627425, 670487000, 831403880, 1039254850, 2078509700, 2598137125, 4157019400, 5196274250, 10392548500, 20785097000]

約数ペア:

[(1, 20785097000), (2, 10392548500), (4, 5196274250), (5, 4157019400), (8, 2598137125), (10, 2078509700), (20, 1039254850), (25, 831403880), (31, 670487000), (40, 519627425), (50, 415701940), (62, 335243500), (100, 207850970), (124, 167621750), (125, 166280776), (155, 134097400), (200, 103925485), (248, 83810875), (250, 83140388), (310, 67048700), (500, 41570194), (620, 33524350), (775, 26819480), (1000, 20785097), (1240, 16762175), (1550, 13409740), (3100, 6704870), (3875, 5363896), (6200, 3352435), (7750, 2681948), (15500, 1340974), (31000, 670487)]