81881800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:456

約数の個数: 192

約数和(自身を含む): 256233600

約数和(自身を除く): 174351800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 25, 26, 28, 35, 40, 44, 50, 52, 55, 56, 65, 70, 77, 88, 91, 100, 104, 110, 130, 140, 143, 154, 175, 182, 200, 220, 260, 275, 280, 286, 308, 325, 350, 364, 385, 409, 440, 455, 520, 550, 572, 616, 650, 700, 715, 728, 770, 818, 910, 1001, 1100, 1144, 1300, 1400, 1430, 1540, 1636, 1820, 1925, 2002, 2045, 2200, 2275, 2600, 2860, 2863, 3080, 3272, 3575, 3640, 3850, 4004, 4090, 4499, 4550, 5005, 5317, 5720, 5726, 7150, 7700, 8008, 8180, 8998, 9100, 10010, 10225, 10634, 11452, 14300, 14315, 15400, 16360, 17996, 18200, 20020, 20450, 21268, 22495, 22904, 25025, 26585, 28600, 28630, 31493, 35992, 37219, 40040, 40900, 42536, 44990, 50050, 53170, 57260, 58487, 62986, 71575, 74438, 81800, 89980, 100100, 106340, 112475, 114520, 116974, 125972, 132925, 143150, 148876, 157465, 179960, 186095, 200200, 212680, 224950, 233948, 251944, 265850, 286300, 292435, 297752, 314930, 372190, 409409, 449900, 467896, 531700, 572600, 584870, 629860, 744380, 787325, 818818, 899800, 930475, 1063400, 1169740, 1259720, 1462175, 1488760, 1574650, 1637636, 1860950, 2047045, 2339480, 2924350, 3149300, 3275272, 3721900, 4094090, 5848700, 6298600, 7443800, 8188180, 10235225, 11697400, 16376360, 20470450, 40940900, 81881800]

約数ペア:

[(1, 81881800), (2, 40940900), (4, 20470450), (5, 16376360), (7, 11697400), (8, 10235225), (10, 8188180), (11, 7443800), (13, 6298600), (14, 5848700), (20, 4094090), (22, 3721900), (25, 3275272), (26, 3149300), (28, 2924350), (35, 2339480), (40, 2047045), (44, 1860950), (50, 1637636), (52, 1574650), (55, 1488760), (56, 1462175), (65, 1259720), (70, 1169740), (77, 1063400), (88, 930475), (91, 899800), (100, 818818), (104, 787325), (110, 744380), (130, 629860), (140, 584870), (143, 572600), (154, 531700), (175, 467896), (182, 449900), (200, 409409), (220, 372190), (260, 314930), (275, 297752), (280, 292435), (286, 286300), (308, 265850), (325, 251944), (350, 233948), (364, 224950), (385, 212680), (409, 200200), (440, 186095), (455, 179960), (520, 157465), (550, 148876), (572, 143150), (616, 132925), (650, 125972), (700, 116974), (715, 114520), (728, 112475), (770, 106340), (818, 100100), (910, 89980), (1001, 81800), (1100, 74438), (1144, 71575), (1300, 62986), (1400, 58487), (1430, 57260), (1540, 53170), (1636, 50050), (1820, 44990), (1925, 42536), (2002, 40900), (2045, 40040), (2200, 37219), (2275, 35992), (2600, 31493), (2860, 28630), (2863, 28600), (3080, 26585), (3272, 25025), (3575, 22904), (3640, 22495), (3850, 21268), (4004, 20450), (4090, 20020), (4499, 18200), (4550, 17996), (5005, 16360), (5317, 15400), (5720, 14315), (5726, 14300), (7150, 11452), (7700, 10634), (8008, 10225), (8180, 10010), (8998, 9100)]