78019900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{491}}^1$

素因数の和:739

約数の個数: 72

約数和(自身を含む): 194737536

約数和(自身を除く): 116717636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 227, 350, 454, 491, 700, 908, 982, 1135, 1589, 1964, 2270, 2455, 3178, 3437, 4540, 4910, 5675, 6356, 6874, 7945, 9820, 11350, 12275, 13748, 15890, 17185, 22700, 24550, 31780, 34370, 39725, 49100, 68740, 79450, 85925, 111457, 158900, 171850, 222914, 343700, 445828, 557285, 780199, 1114570, 1560398, 2229140, 2786425, 3120796, 3900995, 5572850, 7801990, 11145700, 15603980, 19504975, 39009950, 78019900]

約数ペア:

[(1, 78019900), (2, 39009950), (4, 19504975), (5, 15603980), (7, 11145700), (10, 7801990), (14, 5572850), (20, 3900995), (25, 3120796), (28, 2786425), (35, 2229140), (50, 1560398), (70, 1114570), (100, 780199), (140, 557285), (175, 445828), (227, 343700), (350, 222914), (454, 171850), (491, 158900), (700, 111457), (908, 85925), (982, 79450), (1135, 68740), (1589, 49100), (1964, 39725), (2270, 34370), (2455, 31780), (3178, 24550), (3437, 22700), (4540, 17185), (4910, 15890), (5675, 13748), (6356, 12275), (6874, 11350), (7945, 9820)]