21019860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3767}}^1$

素因数の和:3813

約数の個数: 72

約数和(自身を含む): 65834496

約数和(自身を除く): 44814636

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3767, 5580, 7534, 11301, 15068, 18835, 22602, 33903, 37670, 45204, 56505, 67806, 75340, 113010, 116777, 135612, 169515, 226020, 233554, 339030, 350331, 467108, 583885, 678060, 700662, 1050993, 1167770, 1401324, 1751655, 2101986, 2335540, 3503310, 4203972, 5254965, 7006620, 10509930, 21019860]

約数ペア:

[(1, 21019860), (2, 10509930), (3, 7006620), (4, 5254965), (5, 4203972), (6, 3503310), (9, 2335540), (10, 2101986), (12, 1751655), (15, 1401324), (18, 1167770), (20, 1050993), (30, 700662), (31, 678060), (36, 583885), (45, 467108), (60, 350331), (62, 339030), (90, 233554), (93, 226020), (124, 169515), (155, 135612), (180, 116777), (186, 113010), (279, 75340), (310, 67806), (372, 56505), (465, 45204), (558, 37670), (620, 33903), (930, 22602), (1116, 18835), (1395, 15068), (1860, 11301), (2790, 7534), (3767, 5580)]