440020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{449}}^1$

素因数の和:472

約数の個数: 36

約数和(自身を含む): 1077300

約数和(自身を除く): 637280

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 449, 490, 898, 980, 1796, 2245, 3143, 4490, 6286, 8980, 12572, 15715, 22001, 31430, 44002, 62860, 88004, 110005, 220010, 440020]

約数ペア:

[(1, 440020), (2, 220010), (4, 110005), (5, 88004), (7, 62860), (10, 44002), (14, 31430), (20, 22001), (28, 15715), (35, 12572), (49, 8980), (70, 6286), (98, 4490), (140, 3143), (196, 2245), (245, 1796), (449, 980), (490, 898)]