20512906380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{284191}}^1$

素因数の和:284607

約数の個数: 72

約数和(自身を含む): 62377870464

約数和(自身を除く): 41864964084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 401, 802, 1203, 1604, 2005, 2406, 3609, 4010, 4812, 6015, 7218, 8020, 12030, 14436, 18045, 24060, 36090, 72180, 284191, 568382, 852573, 1136764, 1420955, 1705146, 2557719, 2841910, 3410292, 4262865, 5115438, 5683820, 8525730, 10230876, 12788595, 17051460, 25577190, 51154380, 113960591, 227921182, 341881773, 455842364, 569802955, 683763546, 1025645319, 1139605910, 1367527092, 1709408865, 2051290638, 2279211820, 3418817730, 4102581276, 5128226595, 6837635460, 10256453190, 20512906380]

約数ペア:

[(1, 20512906380), (2, 10256453190), (3, 6837635460), (4, 5128226595), (5, 4102581276), (6, 3418817730), (9, 2279211820), (10, 2051290638), (12, 1709408865), (15, 1367527092), (18, 1139605910), (20, 1025645319), (30, 683763546), (36, 569802955), (45, 455842364), (60, 341881773), (90, 227921182), (180, 113960591), (401, 51154380), (802, 25577190), (1203, 17051460), (1604, 12788595), (2005, 10230876), (2406, 8525730), (3609, 5683820), (4010, 5115438), (4812, 4262865), (6015, 3410292), (7218, 2841910), (8020, 2557719), (12030, 1705146), (14436, 1420955), (18045, 1136764), (24060, 852573), (36090, 568382), (72180, 284191)]