21496995

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1361}}^1$

素因数の和:1394

約数の個数: 48

約数和(自身を含む): 41644512

約数和(自身を除く): 20147517

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 1053, 1215, 1361, 1755, 3159, 4083, 5265, 6805, 12249, 15795, 17693, 20415, 36747, 53079, 61245, 88465, 110241, 159237, 183735, 265395, 330723, 477711, 551205, 796185, 1433133, 1653615, 2388555, 4299399, 7165665, 21496995]

約数ペア:

[(1, 21496995), (3, 7165665), (5, 4299399), (9, 2388555), (13, 1653615), (15, 1433133), (27, 796185), (39, 551205), (45, 477711), (65, 330723), (81, 265395), (117, 183735), (135, 159237), (195, 110241), (243, 88465), (351, 61245), (405, 53079), (585, 36747), (1053, 20415), (1215, 17693), (1361, 15795), (1755, 12249), (3159, 6805), (4083, 5265)]