21810900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:178

約数の個数: 144

約数和(自身を含む): 68745600

約数和(自身を除く): 46934700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 25, 29, 30, 46, 50, 58, 60, 69, 75, 87, 92, 100, 109, 115, 116, 138, 145, 150, 174, 218, 230, 276, 290, 300, 327, 345, 348, 435, 436, 460, 545, 575, 580, 654, 667, 690, 725, 870, 1090, 1150, 1308, 1334, 1380, 1450, 1635, 1725, 1740, 2001, 2175, 2180, 2300, 2507, 2668, 2725, 2900, 3161, 3270, 3335, 3450, 4002, 4350, 5014, 5450, 6322, 6540, 6670, 6900, 7521, 8004, 8175, 8700, 9483, 10005, 10028, 10900, 12535, 12644, 13340, 15042, 15805, 16350, 16675, 18966, 20010, 25070, 30084, 31610, 32700, 33350, 37605, 37932, 40020, 47415, 50025, 50140, 62675, 63220, 66700, 72703, 75210, 79025, 94830, 100050, 125350, 145406, 150420, 158050, 188025, 189660, 200100, 218109, 237075, 250700, 290812, 316100, 363515, 376050, 436218, 474150, 727030, 752100, 872436, 948300, 1090545, 1454060, 1817575, 2181090, 3635150, 4362180, 5452725, 7270300, 10905450, 21810900]

約数ペア:

[(1, 21810900), (2, 10905450), (3, 7270300), (4, 5452725), (5, 4362180), (6, 3635150), (10, 2181090), (12, 1817575), (15, 1454060), (20, 1090545), (23, 948300), (25, 872436), (29, 752100), (30, 727030), (46, 474150), (50, 436218), (58, 376050), (60, 363515), (69, 316100), (75, 290812), (87, 250700), (92, 237075), (100, 218109), (109, 200100), (115, 189660), (116, 188025), (138, 158050), (145, 150420), (150, 145406), (174, 125350), (218, 100050), (230, 94830), (276, 79025), (290, 75210), (300, 72703), (327, 66700), (345, 63220), (348, 62675), (435, 50140), (436, 50025), (460, 47415), (545, 40020), (575, 37932), (580, 37605), (654, 33350), (667, 32700), (690, 31610), (725, 30084), (870, 25070), (1090, 20010), (1150, 18966), (1308, 16675), (1334, 16350), (1380, 15805), (1450, 15042), (1635, 13340), (1725, 12644), (1740, 12535), (2001, 10900), (2175, 10028), (2180, 10005), (2300, 9483), (2507, 8700), (2668, 8175), (2725, 8004), (2900, 7521), (3161, 6900), (3270, 6670), (3335, 6540), (3450, 6322), (4002, 5450), (4350, 5014)]