20907484

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 42463008

約数和(自身を除く): 21555524

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 67, 68, 134, 221, 268, 353, 442, 706, 871, 884, 1139, 1412, 1742, 2278, 3484, 4556, 4589, 6001, 9178, 12002, 14807, 18356, 23651, 24004, 29614, 47302, 59228, 78013, 94604, 156026, 307463, 312052, 402067, 614926, 804134, 1229852, 1608268, 5226871, 10453742, 20907484]

約数ペア:

[(1, 20907484), (2, 10453742), (4, 5226871), (13, 1608268), (17, 1229852), (26, 804134), (34, 614926), (52, 402067), (67, 312052), (68, 307463), (134, 156026), (221, 94604), (268, 78013), (353, 59228), (442, 47302), (706, 29614), (871, 24004), (884, 23651), (1139, 18356), (1412, 14807), (1742, 12002), (2278, 9178), (3484, 6001), (4556, 4589)]