389060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{397}}^1$

素因数の和:420

約数の個数: 36

約数和(自身を含む): 952812

約数和(自身を除く): 563752

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 397, 490, 794, 980, 1588, 1985, 2779, 3970, 5558, 7940, 11116, 13895, 19453, 27790, 38906, 55580, 77812, 97265, 194530, 389060]

約数ペア:

[(1, 389060), (2, 194530), (4, 97265), (5, 77812), (7, 55580), (10, 38906), (14, 27790), (20, 19453), (28, 13895), (35, 11116), (49, 7940), (70, 5558), (98, 3970), (140, 2779), (196, 1985), (245, 1588), (397, 980), (490, 794)]