280487900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:604

約数の個数: 144

約数和(自身を含む): 770784000

約数和(自身を除く): 490296100

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 73, 77, 100, 110, 140, 146, 154, 175, 220, 275, 292, 308, 350, 365, 385, 499, 511, 550, 700, 730, 770, 803, 998, 1022, 1100, 1460, 1540, 1606, 1825, 1925, 1996, 2044, 2495, 2555, 3212, 3493, 3650, 3850, 4015, 4990, 5110, 5489, 5621, 6986, 7300, 7700, 8030, 9980, 10220, 10978, 11242, 12475, 12775, 13972, 16060, 17465, 20075, 21956, 22484, 24950, 25550, 27445, 28105, 34930, 36427, 38423, 40150, 49900, 51100, 54890, 56210, 69860, 72854, 76846, 80300, 87325, 109780, 112420, 137225, 140525, 145708, 153692, 174650, 182135, 192115, 254989, 274450, 281050, 349300, 364270, 384230, 400697, 509978, 548900, 562100, 728540, 768460, 801394, 910675, 960575, 1019956, 1274945, 1602788, 1821350, 1921150, 2003485, 2549890, 2804879, 3642700, 3842300, 4006970, 5099780, 5609758, 6374725, 8013940, 10017425, 11219516, 12749450, 14024395, 20034850, 25498900, 28048790, 40069700, 56097580, 70121975, 140243950, 280487900]

約数ペア:

[(1, 280487900), (2, 140243950), (4, 70121975), (5, 56097580), (7, 40069700), (10, 28048790), (11, 25498900), (14, 20034850), (20, 14024395), (22, 12749450), (25, 11219516), (28, 10017425), (35, 8013940), (44, 6374725), (50, 5609758), (55, 5099780), (70, 4006970), (73, 3842300), (77, 3642700), (100, 2804879), (110, 2549890), (140, 2003485), (146, 1921150), (154, 1821350), (175, 1602788), (220, 1274945), (275, 1019956), (292, 960575), (308, 910675), (350, 801394), (365, 768460), (385, 728540), (499, 562100), (511, 548900), (550, 509978), (700, 400697), (730, 384230), (770, 364270), (803, 349300), (998, 281050), (1022, 274450), (1100, 254989), (1460, 192115), (1540, 182135), (1606, 174650), (1825, 153692), (1925, 145708), (1996, 140525), (2044, 137225), (2495, 112420), (2555, 109780), (3212, 87325), (3493, 80300), (3650, 76846), (3850, 72854), (4015, 69860), (4990, 56210), (5110, 54890), (5489, 51100), (5621, 49900), (6986, 40150), (7300, 38423), (7700, 36427), (8030, 34930), (9980, 28105), (10220, 27445), (10978, 25550), (11242, 24950), (12475, 22484), (12775, 21956), (13972, 20075), (16060, 17465)]