21354660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 144

約数和(自身を含む): 69189120

約数和(自身を除く): 47834460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 43, 45, 60, 62, 86, 89, 90, 93, 124, 129, 155, 172, 178, 180, 186, 215, 258, 267, 279, 310, 356, 372, 387, 430, 445, 465, 516, 534, 558, 620, 645, 774, 801, 860, 890, 930, 1068, 1116, 1290, 1333, 1335, 1395, 1548, 1602, 1780, 1860, 1935, 2580, 2666, 2670, 2759, 2790, 3204, 3827, 3870, 3999, 4005, 5332, 5340, 5518, 5580, 6665, 7654, 7740, 7998, 8010, 8277, 11036, 11481, 11997, 13330, 13795, 15308, 15996, 16020, 16554, 19135, 19995, 22962, 23994, 24831, 26660, 27590, 33108, 34443, 38270, 39990, 41385, 45924, 47988, 49662, 55180, 57405, 59985, 68886, 76540, 79980, 82770, 99324, 114810, 118637, 119970, 124155, 137772, 165540, 172215, 229620, 237274, 239940, 248310, 344430, 355911, 474548, 496620, 593185, 688860, 711822, 1067733, 1186370, 1423644, 1779555, 2135466, 2372740, 3559110, 4270932, 5338665, 7118220, 10677330, 21354660]

約数ペア:

[(1, 21354660), (2, 10677330), (3, 7118220), (4, 5338665), (5, 4270932), (6, 3559110), (9, 2372740), (10, 2135466), (12, 1779555), (15, 1423644), (18, 1186370), (20, 1067733), (30, 711822), (31, 688860), (36, 593185), (43, 496620), (45, 474548), (60, 355911), (62, 344430), (86, 248310), (89, 239940), (90, 237274), (93, 229620), (124, 172215), (129, 165540), (155, 137772), (172, 124155), (178, 119970), (180, 118637), (186, 114810), (215, 99324), (258, 82770), (267, 79980), (279, 76540), (310, 68886), (356, 59985), (372, 57405), (387, 55180), (430, 49662), (445, 47988), (465, 45924), (516, 41385), (534, 39990), (558, 38270), (620, 34443), (645, 33108), (774, 27590), (801, 26660), (860, 24831), (890, 23994), (930, 22962), (1068, 19995), (1116, 19135), (1290, 16554), (1333, 16020), (1335, 15996), (1395, 15308), (1548, 13795), (1602, 13330), (1780, 11997), (1860, 11481), (1935, 11036), (2580, 8277), (2666, 8010), (2670, 7998), (2759, 7740), (2790, 7654), (3204, 6665), (3827, 5580), (3870, 5518), (3999, 5340), (4005, 5332)]