21815580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{599}}^1\times {\mathrm{607}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 61286400

約数和(自身を除く): 39470820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 599, 607, 1198, 1214, 1797, 1821, 2396, 2428, 2995, 3035, 3594, 3642, 5990, 6070, 7188, 7284, 8985, 9105, 11980, 12140, 17970, 18210, 35940, 36420, 363593, 727186, 1090779, 1454372, 1817965, 2181558, 3635930, 4363116, 5453895, 7271860, 10907790, 21815580]

約数ペア:

[(1, 21815580), (2, 10907790), (3, 7271860), (4, 5453895), (5, 4363116), (6, 3635930), (10, 2181558), (12, 1817965), (15, 1454372), (20, 1090779), (30, 727186), (60, 363593), (599, 36420), (607, 35940), (1198, 18210), (1214, 17970), (1797, 12140), (1821, 11980), (2396, 9105), (2428, 8985), (2995, 7284), (3035, 7188), (3594, 6070), (3642, 5990)]