19954887500

素因数分解:

$2^2\times 5^5\times {\mathrm{797}}^1\times {\mathrm{2003}}^1$

素因数の和:2829

約数の個数: 72

約数和(自身を含む): 43725107664

約数和(自身を除く): 23770220164

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 797, 1250, 1594, 2003, 2500, 3125, 3188, 3985, 4006, 6250, 7970, 8012, 10015, 12500, 15940, 19925, 20030, 39850, 40060, 50075, 79700, 99625, 100150, 199250, 200300, 250375, 398500, 498125, 500750, 996250, 1001500, 1251875, 1596391, 1992500, 2490625, 2503750, 3192782, 4981250, 5007500, 6259375, 6385564, 7981955, 9962500, 12518750, 15963910, 25037500, 31927820, 39909775, 79819550, 159639100, 199548875, 399097750, 798195500, 997744375, 1995488750, 3990977500, 4988721875, 9977443750, 19954887500]

約数ペア:

[(1, 19954887500), (2, 9977443750), (4, 4988721875), (5, 3990977500), (10, 1995488750), (20, 997744375), (25, 798195500), (50, 399097750), (100, 199548875), (125, 159639100), (250, 79819550), (500, 39909775), (625, 31927820), (797, 25037500), (1250, 15963910), (1594, 12518750), (2003, 9962500), (2500, 7981955), (3125, 6385564), (3188, 6259375), (3985, 5007500), (4006, 4981250), (6250, 3192782), (7970, 2503750), (8012, 2490625), (10015, 1992500), (12500, 1596391), (15940, 1251875), (19925, 1001500), (20030, 996250), (39850, 500750), (40060, 498125), (50075, 398500), (79700, 250375), (99625, 200300), (100150, 199250)]