21813900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:168

約数の個数: 144

約数和(自身を含む): 68745600

約数和(自身を除く): 46931700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 25, 30, 38, 43, 50, 57, 60, 75, 76, 86, 89, 95, 100, 114, 129, 150, 172, 178, 190, 215, 228, 258, 267, 285, 300, 356, 380, 430, 445, 475, 516, 534, 570, 645, 817, 860, 890, 950, 1068, 1075, 1140, 1290, 1335, 1425, 1634, 1691, 1780, 1900, 2150, 2225, 2451, 2580, 2670, 2850, 3225, 3268, 3382, 3827, 4085, 4300, 4450, 4902, 5073, 5340, 5700, 6450, 6675, 6764, 7654, 8170, 8455, 8900, 9804, 10146, 11481, 12255, 12900, 13350, 15308, 16340, 16910, 19135, 20292, 20425, 22962, 24510, 25365, 26700, 33820, 38270, 40850, 42275, 45924, 49020, 50730, 57405, 61275, 72713, 76540, 81700, 84550, 95675, 101460, 114810, 122550, 126825, 145426, 169100, 191350, 218139, 229620, 245100, 253650, 287025, 290852, 363565, 382700, 436278, 507300, 574050, 727130, 872556, 1090695, 1148100, 1454260, 1817825, 2181390, 3635650, 4362780, 5453475, 7271300, 10906950, 21813900]

約数ペア:

[(1, 21813900), (2, 10906950), (3, 7271300), (4, 5453475), (5, 4362780), (6, 3635650), (10, 2181390), (12, 1817825), (15, 1454260), (19, 1148100), (20, 1090695), (25, 872556), (30, 727130), (38, 574050), (43, 507300), (50, 436278), (57, 382700), (60, 363565), (75, 290852), (76, 287025), (86, 253650), (89, 245100), (95, 229620), (100, 218139), (114, 191350), (129, 169100), (150, 145426), (172, 126825), (178, 122550), (190, 114810), (215, 101460), (228, 95675), (258, 84550), (267, 81700), (285, 76540), (300, 72713), (356, 61275), (380, 57405), (430, 50730), (445, 49020), (475, 45924), (516, 42275), (534, 40850), (570, 38270), (645, 33820), (817, 26700), (860, 25365), (890, 24510), (950, 22962), (1068, 20425), (1075, 20292), (1140, 19135), (1290, 16910), (1335, 16340), (1425, 15308), (1634, 13350), (1691, 12900), (1780, 12255), (1900, 11481), (2150, 10146), (2225, 9804), (2451, 8900), (2580, 8455), (2670, 8170), (2850, 7654), (3225, 6764), (3268, 6675), (3382, 6450), (3827, 5700), (4085, 5340), (4300, 5073), (4450, 4902)]