688860

素因数分解:

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

素因数の和:147

約数の個数: 72

約数和(自身を含む): 2162160

約数和(自身を除く): 1473300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 89, 90, 129, 172, 178, 180, 215, 258, 267, 356, 387, 430, 445, 516, 534, 645, 774, 801, 860, 890, 1068, 1290, 1335, 1548, 1602, 1780, 1935, 2580, 2670, 3204, 3827, 3870, 4005, 5340, 7654, 7740, 8010, 11481, 15308, 16020, 19135, 22962, 34443, 38270, 45924, 57405, 68886, 76540, 114810, 137772, 172215, 229620, 344430, 688860]

約数ペア:

[(1, 688860), (2, 344430), (3, 229620), (4, 172215), (5, 137772), (6, 114810), (9, 76540), (10, 68886), (12, 57405), (15, 45924), (18, 38270), (20, 34443), (30, 22962), (36, 19135), (43, 16020), (45, 15308), (60, 11481), (86, 8010), (89, 7740), (90, 7654), (129, 5340), (172, 4005), (178, 3870), (180, 3827), (215, 3204), (258, 2670), (267, 2580), (356, 1935), (387, 1780), (430, 1602), (445, 1548), (516, 1335), (534, 1290), (645, 1068), (774, 890), (801, 860)]