21910413

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 34652160

約数和(自身を除く): 12741747

約数列:

[1, 3, 7, 21, 47, 79, 141, 237, 281, 329, 553, 843, 987, 1659, 1967, 3713, 5901, 11139, 13207, 22199, 25991, 39621, 66597, 77973, 92449, 155393, 277347, 466179, 1043353, 3130059, 7303471, 21910413]

約数ペア:

[(1, 21910413), (3, 7303471), (7, 3130059), (21, 1043353), (47, 466179), (79, 277347), (141, 155393), (237, 92449), (281, 77973), (329, 66597), (553, 39621), (843, 25991), (987, 22199), (1659, 13207), (1967, 11139), (3713, 5901)]