20278154

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 34245120

約数和(自身を除く): 13966966

約数列:

[1, 2, 13, 26, 31, 62, 139, 181, 278, 362, 403, 806, 1807, 2353, 3614, 4309, 4706, 5611, 8618, 11222, 25159, 50318, 56017, 72943, 112034, 145886, 327067, 654134, 779929, 1559858, 10139077, 20278154]

約数ペア:

[(1, 20278154), (2, 10139077), (13, 1559858), (26, 779929), (31, 654134), (62, 327067), (139, 145886), (181, 112034), (278, 72943), (362, 56017), (403, 50318), (806, 25159), (1807, 11222), (2353, 8618), (3614, 5611), (4309, 4706)]