64140020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{65449}}^1$

素因数の和:65472

約数の個数: 36

約数和(自身を含む): 156687300

約数和(自身を除く): 92547280

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 65449, 130898, 261796, 327245, 458143, 654490, 916286, 1308980, 1832572, 2290715, 3207001, 4581430, 6414002, 9162860, 12828004, 16035005, 32070010, 64140020]

約数ペア:

[(1, 64140020), (2, 32070010), (4, 16035005), (5, 12828004), (7, 9162860), (10, 6414002), (14, 4581430), (20, 3207001), (28, 2290715), (35, 1832572), (49, 1308980), (70, 916286), (98, 654490), (140, 458143), (196, 327245), (245, 261796), (490, 130898), (980, 65449)]