212301789

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1\times {\mathrm{283}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 328258560

約数和(自身を除く): 115956771

約数列:

[1, 3, 7, 21, 139, 257, 283, 417, 771, 849, 973, 1799, 1981, 2919, 5397, 5943, 35723, 39337, 72731, 107169, 118011, 218193, 250061, 275359, 509117, 750183, 826077, 1527351, 10109609, 30328827, 70767263, 212301789]

約数ペア:

[(1, 212301789), (3, 70767263), (7, 30328827), (21, 10109609), (139, 1527351), (257, 826077), (283, 750183), (417, 509117), (771, 275359), (849, 250061), (973, 218193), (1799, 118011), (1981, 107169), (2919, 72731), (5397, 39337), (5943, 35723)]