245967020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{30517}}^1$

素因数の和:30570

約数の個数: 48

約数和(自身を含む): 574226688

約数和(自身を除く): 328259668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 30517, 61034, 122068, 152585, 305170, 396721, 610340, 793442, 946027, 1586884, 1892054, 1983605, 3784108, 3967210, 4730135, 7934420, 9460270, 12298351, 18920540, 24596702, 49193404, 61491755, 122983510, 245967020]

約数ペア:

[(1, 245967020), (2, 122983510), (4, 61491755), (5, 49193404), (10, 24596702), (13, 18920540), (20, 12298351), (26, 9460270), (31, 7934420), (52, 4730135), (62, 3967210), (65, 3784108), (124, 1983605), (130, 1892054), (155, 1586884), (260, 946027), (310, 793442), (403, 610340), (620, 396721), (806, 305170), (1612, 152585), (2015, 122068), (4030, 61034), (8060, 30517)]