81354980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{3359}}^1$

素因数の和:3548

約数の個数: 48

約数和(自身を含む): 196439040

約数和(自身を除く): 115084060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 865, 1211, 1730, 2422, 3359, 3460, 4844, 6055, 6718, 12110, 13436, 16795, 23513, 24220, 33590, 47026, 67180, 94052, 117565, 235130, 470260, 581107, 1162214, 2324428, 2905535, 4067749, 5811070, 8135498, 11622140, 16270996, 20338745, 40677490, 81354980]

約数ペア:

[(1, 81354980), (2, 40677490), (4, 20338745), (5, 16270996), (7, 11622140), (10, 8135498), (14, 5811070), (20, 4067749), (28, 2905535), (35, 2324428), (70, 1162214), (140, 581107), (173, 470260), (346, 235130), (692, 117565), (865, 94052), (1211, 67180), (1730, 47026), (2422, 33590), (3359, 24220), (3460, 23513), (4844, 16795), (6055, 13436), (6718, 12110)]