257887942

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{919}}^1$

素因数の和:1228

約数の個数: 32

約数和(自身を含む): 428440320

約数和(自身を除く): 170552378

約数列:

[1, 2, 13, 26, 43, 86, 251, 502, 559, 919, 1118, 1838, 3263, 6526, 10793, 11947, 21586, 23894, 39517, 79034, 140309, 230669, 280618, 461338, 513721, 1027442, 2998697, 5997394, 9918767, 19837534, 128943971, 257887942]

約数ペア:

[(1, 257887942), (2, 128943971), (13, 19837534), (26, 9918767), (43, 5997394), (86, 2998697), (251, 1027442), (502, 513721), (559, 461338), (919, 280618), (1118, 230669), (1838, 140309), (3263, 79034), (6526, 39517), (10793, 23894), (11947, 21586)]