21419820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{937}}^1$

素因数の和:1079

約数の個数: 72

約数和(自身を含む): 65554944

約数和(自身を除く): 44135124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 127, 180, 254, 381, 508, 635, 762, 937, 1143, 1270, 1524, 1874, 1905, 2286, 2540, 2811, 3748, 3810, 4572, 4685, 5622, 5715, 7620, 8433, 9370, 11244, 11430, 14055, 16866, 18740, 22860, 28110, 33732, 42165, 56220, 84330, 118999, 168660, 237998, 356997, 475996, 594995, 713994, 1070991, 1189990, 1427988, 1784985, 2141982, 2379980, 3569970, 4283964, 5354955, 7139940, 10709910, 21419820]

約数ペア:

[(1, 21419820), (2, 10709910), (3, 7139940), (4, 5354955), (5, 4283964), (6, 3569970), (9, 2379980), (10, 2141982), (12, 1784985), (15, 1427988), (18, 1189990), (20, 1070991), (30, 713994), (36, 594995), (45, 475996), (60, 356997), (90, 237998), (127, 168660), (180, 118999), (254, 84330), (381, 56220), (508, 42165), (635, 33732), (762, 28110), (937, 22860), (1143, 18740), (1270, 16866), (1524, 14055), (1874, 11430), (1905, 11244), (2286, 9370), (2540, 8433), (2811, 7620), (3748, 5715), (3810, 5622), (4572, 4685)]