18915000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:139

約数の個数: 160

約数和(自身を含む): 64291920

約数和(自身を除く): 45376920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 97, 100, 104, 120, 125, 130, 150, 156, 194, 195, 200, 250, 260, 291, 300, 312, 325, 375, 388, 390, 485, 500, 520, 582, 600, 625, 650, 750, 776, 780, 970, 975, 1000, 1164, 1250, 1261, 1300, 1455, 1500, 1560, 1625, 1875, 1940, 1950, 2328, 2425, 2500, 2522, 2600, 2910, 3000, 3250, 3750, 3783, 3880, 3900, 4850, 4875, 5000, 5044, 5820, 6305, 6500, 7275, 7500, 7566, 7800, 8125, 9700, 9750, 10088, 11640, 12125, 12610, 13000, 14550, 15000, 15132, 16250, 18915, 19400, 19500, 24250, 24375, 25220, 29100, 30264, 31525, 32500, 36375, 37830, 39000, 48500, 48750, 50440, 58200, 60625, 63050, 65000, 72750, 75660, 94575, 97000, 97500, 121250, 126100, 145500, 151320, 157625, 181875, 189150, 195000, 242500, 252200, 291000, 315250, 363750, 378300, 472875, 485000, 630500, 727500, 756600, 788125, 945750, 1261000, 1455000, 1576250, 1891500, 2364375, 3152500, 3783000, 4728750, 6305000, 9457500, 18915000]

約数ペア:

[(1, 18915000), (2, 9457500), (3, 6305000), (4, 4728750), (5, 3783000), (6, 3152500), (8, 2364375), (10, 1891500), (12, 1576250), (13, 1455000), (15, 1261000), (20, 945750), (24, 788125), (25, 756600), (26, 727500), (30, 630500), (39, 485000), (40, 472875), (50, 378300), (52, 363750), (60, 315250), (65, 291000), (75, 252200), (78, 242500), (97, 195000), (100, 189150), (104, 181875), (120, 157625), (125, 151320), (130, 145500), (150, 126100), (156, 121250), (194, 97500), (195, 97000), (200, 94575), (250, 75660), (260, 72750), (291, 65000), (300, 63050), (312, 60625), (325, 58200), (375, 50440), (388, 48750), (390, 48500), (485, 39000), (500, 37830), (520, 36375), (582, 32500), (600, 31525), (625, 30264), (650, 29100), (750, 25220), (776, 24375), (780, 24250), (970, 19500), (975, 19400), (1000, 18915), (1164, 16250), (1250, 15132), (1261, 15000), (1300, 14550), (1455, 13000), (1500, 12610), (1560, 12125), (1625, 11640), (1875, 10088), (1940, 9750), (1950, 9700), (2328, 8125), (2425, 7800), (2500, 7566), (2522, 7500), (2600, 7275), (2910, 6500), (3000, 6305), (3250, 5820), (3750, 5044), (3783, 5000), (3880, 4875), (3900, 4850)]