399888524

素因数分解:

$2^2\times 7^1\times {\mathrm{673}}^1\times {\mathrm{21221}}^1$

素因数の和:21905

約数の個数: 24

約数和(自身を含む): 801003168

約数和(自身を除く): 401114644

約数列:

[1, 2, 4, 7, 14, 28, 673, 1346, 2692, 4711, 9422, 18844, 21221, 42442, 84884, 148547, 297094, 594188, 14281733, 28563466, 57126932, 99972131, 199944262, 399888524]

約数ペア:

[(1, 399888524), (2, 199944262), (4, 99972131), (7, 57126932), (14, 28563466), (28, 14281733), (673, 594188), (1346, 297094), (2692, 148547), (4711, 84884), (9422, 42442), (18844, 21221)]