20874080

素因数分解:

$2^5\times 5^1\times {\mathrm{283}}^1\times {\mathrm{461}}^1$

素因数の和:759

約数の個数: 48

約数和(自身を含む): 49596624

約数和(自身を除く): 28722544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 283, 461, 566, 922, 1132, 1415, 1844, 2264, 2305, 2830, 3688, 4528, 4610, 5660, 7376, 9056, 9220, 11320, 14752, 18440, 22640, 36880, 45280, 73760, 130463, 260926, 521852, 652315, 1043704, 1304630, 2087408, 2609260, 4174816, 5218520, 10437040, 20874080]

約数ペア:

[(1, 20874080), (2, 10437040), (4, 5218520), (5, 4174816), (8, 2609260), (10, 2087408), (16, 1304630), (20, 1043704), (32, 652315), (40, 521852), (80, 260926), (160, 130463), (283, 73760), (461, 45280), (566, 36880), (922, 22640), (1132, 18440), (1415, 14752), (1844, 11320), (2264, 9220), (2305, 9056), (2830, 7376), (3688, 5660), (4528, 4610)]