395871980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{403951}}^1$

素因数の和:403974

約数の個数: 36

約数和(自身を含む): 967061088

約数和(自身を除く): 571189108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 403951, 807902, 1615804, 2019755, 2827657, 4039510, 5655314, 8079020, 11310628, 14138285, 19793599, 28276570, 39587198, 56553140, 79174396, 98967995, 197935990, 395871980]

約数ペア:

[(1, 395871980), (2, 197935990), (4, 98967995), (5, 79174396), (7, 56553140), (10, 39587198), (14, 28276570), (20, 19793599), (28, 14138285), (35, 11310628), (49, 8079020), (70, 5655314), (98, 4039510), (140, 2827657), (196, 2019755), (245, 1615804), (490, 807902), (980, 403951)]