19545500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:160

約数の個数: 96

約数和(自身を含む): 47943168

約数和(自身を除く): 28397668

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 97, 100, 124, 125, 130, 155, 194, 250, 260, 310, 325, 388, 403, 485, 500, 620, 650, 775, 806, 970, 1261, 1300, 1550, 1612, 1625, 1940, 2015, 2425, 2522, 3007, 3100, 3250, 3875, 4030, 4850, 5044, 6014, 6305, 6500, 7750, 8060, 9700, 10075, 12028, 12125, 12610, 15035, 15500, 20150, 24250, 25220, 30070, 31525, 39091, 40300, 48500, 50375, 60140, 63050, 75175, 78182, 100750, 126100, 150350, 156364, 157625, 195455, 201500, 300700, 315250, 375875, 390910, 630500, 751750, 781820, 977275, 1503500, 1954550, 3909100, 4886375, 9772750, 19545500]

約数ペア:

[(1, 19545500), (2, 9772750), (4, 4886375), (5, 3909100), (10, 1954550), (13, 1503500), (20, 977275), (25, 781820), (26, 751750), (31, 630500), (50, 390910), (52, 375875), (62, 315250), (65, 300700), (97, 201500), (100, 195455), (124, 157625), (125, 156364), (130, 150350), (155, 126100), (194, 100750), (250, 78182), (260, 75175), (310, 63050), (325, 60140), (388, 50375), (403, 48500), (485, 40300), (500, 39091), (620, 31525), (650, 30070), (775, 25220), (806, 24250), (970, 20150), (1261, 15500), (1300, 15035), (1550, 12610), (1612, 12125), (1625, 12028), (1940, 10075), (2015, 9700), (2425, 8060), (2522, 7750), (3007, 6500), (3100, 6305), (3250, 6014), (3875, 5044), (4030, 4850)]