18780142

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:731

約数の個数: 16

約数和(自身を含む): 28641600

約数和(自身を除く): 9861458

約数列:

[1, 2, 101, 202, 239, 389, 478, 778, 24139, 39289, 48278, 78578, 92971, 185942, 9390071, 18780142]

約数ペア:

[(1, 18780142), (2, 9390071), (101, 185942), (202, 92971), (239, 78578), (389, 48278), (478, 39289), (778, 24139)]