19880770

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3121}}^1$

素因数の和:3155

約数の個数: 48

約数和(自身を含む): 44844408

約数和(自身を除く): 24963638

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3121, 3185, 6242, 6370, 15605, 21847, 31210, 40573, 43694, 81146, 109235, 152929, 202865, 218470, 284011, 305858, 405730, 568022, 764645, 1420055, 1529290, 1988077, 2840110, 3976154, 9940385, 19880770]

約数ペア:

[(1, 19880770), (2, 9940385), (5, 3976154), (7, 2840110), (10, 1988077), (13, 1529290), (14, 1420055), (26, 764645), (35, 568022), (49, 405730), (65, 305858), (70, 284011), (91, 218470), (98, 202865), (130, 152929), (182, 109235), (245, 81146), (455, 43694), (490, 40573), (637, 31210), (910, 21847), (1274, 15605), (3121, 6370), (3185, 6242)]