20705580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16433}}^1$

素因数の和:16455

約数の個数: 72

約数和(自身を含む): 71783712

約数和(自身を除く): 51078132

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16433, 32866, 49299, 65732, 82165, 98598, 115031, 147897, 164330, 197196, 230062, 246495, 295794, 328660, 345093, 460124, 492990, 575155, 591588, 690186, 739485, 985980, 1035279, 1150310, 1380372, 1478970, 1725465, 2070558, 2300620, 2957940, 3450930, 4141116, 5176395, 6901860, 10352790, 20705580]

約数ペア:

[(1, 20705580), (2, 10352790), (3, 6901860), (4, 5176395), (5, 4141116), (6, 3450930), (7, 2957940), (9, 2300620), (10, 2070558), (12, 1725465), (14, 1478970), (15, 1380372), (18, 1150310), (20, 1035279), (21, 985980), (28, 739485), (30, 690186), (35, 591588), (36, 575155), (42, 492990), (45, 460124), (60, 345093), (63, 328660), (70, 295794), (84, 246495), (90, 230062), (105, 197196), (126, 164330), (140, 147897), (180, 115031), (210, 98598), (252, 82165), (315, 65732), (420, 49299), (630, 32866), (1260, 16433)]