20839000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:270

約数の個数: 128

約数和(自身を含む): 60278400

約数和(自身を除く): 39439400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 25, 26, 28, 35, 40, 50, 52, 56, 65, 70, 91, 100, 104, 125, 130, 140, 175, 182, 200, 229, 250, 260, 280, 325, 350, 364, 455, 458, 500, 520, 650, 700, 728, 875, 910, 916, 1000, 1145, 1300, 1400, 1603, 1625, 1750, 1820, 1832, 2275, 2290, 2600, 2977, 3206, 3250, 3500, 3640, 4550, 4580, 5725, 5954, 6412, 6500, 7000, 8015, 9100, 9160, 11375, 11450, 11908, 12824, 13000, 14885, 16030, 18200, 20839, 22750, 22900, 23816, 28625, 29770, 32060, 40075, 41678, 45500, 45800, 57250, 59540, 64120, 74425, 80150, 83356, 91000, 104195, 114500, 119080, 148850, 160300, 166712, 200375, 208390, 229000, 297700, 320600, 372125, 400750, 416780, 520975, 595400, 744250, 801500, 833560, 1041950, 1488500, 1603000, 2083900, 2604875, 2977000, 4167800, 5209750, 10419500, 20839000]

約数ペア:

[(1, 20839000), (2, 10419500), (4, 5209750), (5, 4167800), (7, 2977000), (8, 2604875), (10, 2083900), (13, 1603000), (14, 1488500), (20, 1041950), (25, 833560), (26, 801500), (28, 744250), (35, 595400), (40, 520975), (50, 416780), (52, 400750), (56, 372125), (65, 320600), (70, 297700), (91, 229000), (100, 208390), (104, 200375), (125, 166712), (130, 160300), (140, 148850), (175, 119080), (182, 114500), (200, 104195), (229, 91000), (250, 83356), (260, 80150), (280, 74425), (325, 64120), (350, 59540), (364, 57250), (455, 45800), (458, 45500), (500, 41678), (520, 40075), (650, 32060), (700, 29770), (728, 28625), (875, 23816), (910, 22900), (916, 22750), (1000, 20839), (1145, 18200), (1300, 16030), (1400, 14885), (1603, 13000), (1625, 12824), (1750, 11908), (1820, 11450), (1832, 11375), (2275, 9160), (2290, 9100), (2600, 8015), (2977, 7000), (3206, 6500), (3250, 6412), (3500, 5954), (3640, 5725), (4550, 4580)]