28857780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:678

約数の個数: 144

約数和(自身を含む): 102910080

約数和(自身を除く): 74052300

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 518, 555, 619, 630, 666, 740, 777, 1036, 1110, 1238, 1260, 1295, 1332, 1554, 1665, 1857, 2220, 2331, 2476, 2590, 3095, 3108, 3330, 3714, 3885, 4333, 4662, 5180, 5571, 6190, 6660, 7428, 7770, 8666, 9285, 9324, 11142, 11655, 12380, 12999, 15540, 17332, 18570, 21665, 22284, 22903, 23310, 25998, 27855, 37140, 38997, 43330, 45806, 46620, 51996, 55710, 64995, 68709, 77994, 86660, 91612, 111420, 114515, 129990, 137418, 155988, 160321, 194985, 206127, 229030, 259980, 274836, 320642, 343545, 389970, 412254, 458060, 480963, 641284, 687090, 779940, 801605, 824508, 961926, 1030635, 1374180, 1442889, 1603210, 1923852, 2061270, 2404815, 2885778, 3206420, 4122540, 4809630, 5771556, 7214445, 9619260, 14428890, 28857780]

約数ペア:

[(1, 28857780), (2, 14428890), (3, 9619260), (4, 7214445), (5, 5771556), (6, 4809630), (7, 4122540), (9, 3206420), (10, 2885778), (12, 2404815), (14, 2061270), (15, 1923852), (18, 1603210), (20, 1442889), (21, 1374180), (28, 1030635), (30, 961926), (35, 824508), (36, 801605), (37, 779940), (42, 687090), (45, 641284), (60, 480963), (63, 458060), (70, 412254), (74, 389970), (84, 343545), (90, 320642), (105, 274836), (111, 259980), (126, 229030), (140, 206127), (148, 194985), (180, 160321), (185, 155988), (210, 137418), (222, 129990), (252, 114515), (259, 111420), (315, 91612), (333, 86660), (370, 77994), (420, 68709), (444, 64995), (518, 55710), (555, 51996), (619, 46620), (630, 45806), (666, 43330), (740, 38997), (777, 37140), (1036, 27855), (1110, 25998), (1238, 23310), (1260, 22903), (1295, 22284), (1332, 21665), (1554, 18570), (1665, 17332), (1857, 15540), (2220, 12999), (2331, 12380), (2476, 11655), (2590, 11142), (3095, 9324), (3108, 9285), (3330, 8666), (3714, 7770), (3885, 7428), (4333, 6660), (4662, 6190), (5180, 5571)]