20702500

素因数分解:

$2^2\times 5^4\times 7^2\times {\mathrm{13}}^2$

素因数の和:64

約数の個数: 135

約数和(自身を含む): 57026277

約数和(自身を除く): 36323777

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 49, 50, 52, 65, 70, 91, 98, 100, 125, 130, 140, 169, 175, 182, 196, 245, 250, 260, 325, 338, 350, 364, 455, 490, 500, 625, 637, 650, 676, 700, 845, 875, 910, 980, 1183, 1225, 1250, 1274, 1300, 1625, 1690, 1750, 1820, 2275, 2366, 2450, 2500, 2548, 3185, 3250, 3380, 3500, 4225, 4375, 4550, 4732, 4900, 5915, 6125, 6370, 6500, 8125, 8281, 8450, 8750, 9100, 11375, 11830, 12250, 12740, 15925, 16250, 16562, 16900, 17500, 21125, 22750, 23660, 24500, 29575, 30625, 31850, 32500, 33124, 41405, 42250, 45500, 56875, 59150, 61250, 63700, 79625, 82810, 84500, 105625, 113750, 118300, 122500, 147875, 159250, 165620, 207025, 211250, 227500, 295750, 318500, 398125, 414050, 422500, 591500, 739375, 796250, 828100, 1035125, 1478750, 1592500, 2070250, 2957500, 4140500, 5175625, 10351250, 20702500]

約数ペア:

[(1, 20702500), (2, 10351250), (4, 5175625), (5, 4140500), (7, 2957500), (10, 2070250), (13, 1592500), (14, 1478750), (20, 1035125), (25, 828100), (26, 796250), (28, 739375), (35, 591500), (49, 422500), (50, 414050), (52, 398125), (65, 318500), (70, 295750), (91, 227500), (98, 211250), (100, 207025), (125, 165620), (130, 159250), (140, 147875), (169, 122500), (175, 118300), (182, 113750), (196, 105625), (245, 84500), (250, 82810), (260, 79625), (325, 63700), (338, 61250), (350, 59150), (364, 56875), (455, 45500), (490, 42250), (500, 41405), (625, 33124), (637, 32500), (650, 31850), (676, 30625), (700, 29575), (845, 24500), (875, 23660), (910, 22750), (980, 21125), (1183, 17500), (1225, 16900), (1250, 16562), (1274, 16250), (1300, 15925), (1625, 12740), (1690, 12250), (1750, 11830), (1820, 11375), (2275, 9100), (2366, 8750), (2450, 8450), (2500, 8281), (2548, 8125), (3185, 6500), (3250, 6370), (3380, 6125), (3500, 5915), (4225, 4900), (4375, 4732)]