20209800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2591}}^1$

素因数の和:2623

約数の個数: 96

約数和(自身を含む): 67495680

約数和(自身を除く): 47285880

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, 100, 104, 120, 130, 150, 156, 195, 200, 260, 300, 312, 325, 390, 520, 600, 650, 780, 975, 1300, 1560, 1950, 2591, 2600, 3900, 5182, 7773, 7800, 10364, 12955, 15546, 20728, 25910, 31092, 33683, 38865, 51820, 62184, 64775, 67366, 77730, 101049, 103640, 129550, 134732, 155460, 168415, 194325, 202098, 259100, 269464, 310920, 336830, 388650, 404196, 505245, 518200, 673660, 777300, 808392, 842075, 1010490, 1347320, 1554600, 1684150, 2020980, 2526225, 3368300, 4041960, 5052450, 6736600, 10104900, 20209800]

約数ペア:

[(1, 20209800), (2, 10104900), (3, 6736600), (4, 5052450), (5, 4041960), (6, 3368300), (8, 2526225), (10, 2020980), (12, 1684150), (13, 1554600), (15, 1347320), (20, 1010490), (24, 842075), (25, 808392), (26, 777300), (30, 673660), (39, 518200), (40, 505245), (50, 404196), (52, 388650), (60, 336830), (65, 310920), (75, 269464), (78, 259100), (100, 202098), (104, 194325), (120, 168415), (130, 155460), (150, 134732), (156, 129550), (195, 103640), (200, 101049), (260, 77730), (300, 67366), (312, 64775), (325, 62184), (390, 51820), (520, 38865), (600, 33683), (650, 31092), (780, 25910), (975, 20728), (1300, 15546), (1560, 12955), (1950, 10364), (2591, 7800), (2600, 7773), (3900, 5182)]