20987100

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{2591}}^1$

素因数の和:2617

約数の個数: 90

約数和(自身を含む): 68058144

約数和(自身を除く): 47071044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 135, 150, 162, 180, 225, 270, 300, 324, 405, 450, 540, 675, 810, 900, 1350, 1620, 2025, 2591, 2700, 4050, 5182, 7773, 8100, 10364, 12955, 15546, 23319, 25910, 31092, 38865, 46638, 51820, 64775, 69957, 77730, 93276, 116595, 129550, 139914, 155460, 194325, 209871, 233190, 259100, 279828, 349785, 388650, 419742, 466380, 582975, 699570, 777300, 839484, 1049355, 1165950, 1399140, 1748925, 2098710, 2331900, 3497850, 4197420, 5246775, 6995700, 10493550, 20987100]

約数ペア:

[(1, 20987100), (2, 10493550), (3, 6995700), (4, 5246775), (5, 4197420), (6, 3497850), (9, 2331900), (10, 2098710), (12, 1748925), (15, 1399140), (18, 1165950), (20, 1049355), (25, 839484), (27, 777300), (30, 699570), (36, 582975), (45, 466380), (50, 419742), (54, 388650), (60, 349785), (75, 279828), (81, 259100), (90, 233190), (100, 209871), (108, 194325), (135, 155460), (150, 139914), (162, 129550), (180, 116595), (225, 93276), (270, 77730), (300, 69957), (324, 64775), (405, 51820), (450, 46638), (540, 38865), (675, 31092), (810, 25910), (900, 23319), (1350, 15546), (1620, 12955), (2025, 10364), (2591, 8100), (2700, 7773), (4050, 5182)]