20425965

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4139}}^1$

素因数の和:4201

約数の個数: 32

約数和(自身を含む): 38154240

約数和(自身を除く): 17728275

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4139, 4935, 12417, 20695, 28973, 62085, 86919, 144865, 194533, 434595, 583599, 972665, 1361731, 2917995, 4085193, 6808655, 20425965]

約数ペア:

[(1, 20425965), (3, 6808655), (5, 4085193), (7, 2917995), (15, 1361731), (21, 972665), (35, 583599), (47, 434595), (105, 194533), (141, 144865), (235, 86919), (329, 62085), (705, 28973), (987, 20695), (1645, 12417), (4139, 4935)]