19955988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{42641}}^1$

素因数の和:42664

約数の個数: 36

約数和(自身を含む): 54325908

約数和(自身を除く): 34369920

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 42641, 85282, 127923, 170564, 255846, 383769, 511692, 554333, 767538, 1108666, 1535076, 1662999, 2217332, 3325998, 4988997, 6651996, 9977994, 19955988]

約数ペア:

[(1, 19955988), (2, 9977994), (3, 6651996), (4, 4988997), (6, 3325998), (9, 2217332), (12, 1662999), (13, 1535076), (18, 1108666), (26, 767538), (36, 554333), (39, 511692), (52, 383769), (78, 255846), (117, 170564), (156, 127923), (234, 85282), (468, 42641)]