20395560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{487}}^1$

素因数の和:850

約数の個数: 64

約数和(自身を含む): 61488000

約数和(自身を除く): 41092440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 349, 487, 698, 974, 1047, 1396, 1461, 1745, 1948, 2094, 2435, 2792, 2922, 3490, 3896, 4188, 4870, 5235, 5844, 6980, 7305, 8376, 9740, 10470, 11688, 13960, 14610, 19480, 20940, 29220, 41880, 58440, 169963, 339926, 509889, 679852, 849815, 1019778, 1359704, 1699630, 2039556, 2549445, 3399260, 4079112, 5098890, 6798520, 10197780, 20395560]

約数ペア:

[(1, 20395560), (2, 10197780), (3, 6798520), (4, 5098890), (5, 4079112), (6, 3399260), (8, 2549445), (10, 2039556), (12, 1699630), (15, 1359704), (20, 1019778), (24, 849815), (30, 679852), (40, 509889), (60, 339926), (120, 169963), (349, 58440), (487, 41880), (698, 29220), (974, 20940), (1047, 19480), (1396, 14610), (1461, 13960), (1745, 11688), (1948, 10470), (2094, 9740), (2435, 8376), (2792, 7305), (2922, 6980), (3490, 5844), (3896, 5235), (4188, 4870)]