399691372

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{643}}^1\times {\mathrm{8179}}^1$

素因数の和:8845

約数の個数: 24

約数和(自身を含む): 737508800

約数和(自身を除く): 337817428

約数列:

[1, 2, 4, 19, 38, 76, 643, 1286, 2572, 8179, 12217, 16358, 24434, 32716, 48868, 155401, 310802, 621604, 5259097, 10518194, 21036388, 99922843, 199845686, 399691372]

約数ペア:

[(1, 399691372), (2, 199845686), (4, 99922843), (19, 21036388), (38, 10518194), (76, 5259097), (643, 621604), (1286, 310802), (2572, 155401), (8179, 48868), (12217, 32716), (16358, 24434)]