20012512

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{659}}^1$

素因数の和:755

約数の個数: 48

約数和(自身を含む): 43076880

約数和(自身を除く): 23064368

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 73, 104, 146, 208, 292, 416, 584, 659, 949, 1168, 1318, 1898, 2336, 2636, 3796, 5272, 7592, 8567, 10544, 15184, 17134, 21088, 30368, 34268, 48107, 68536, 96214, 137072, 192428, 274144, 384856, 625391, 769712, 1250782, 1539424, 2501564, 5003128, 10006256, 20012512]

約数ペア:

[(1, 20012512), (2, 10006256), (4, 5003128), (8, 2501564), (13, 1539424), (16, 1250782), (26, 769712), (32, 625391), (52, 384856), (73, 274144), (104, 192428), (146, 137072), (208, 96214), (292, 68536), (416, 48107), (584, 34268), (659, 30368), (949, 21088), (1168, 17134), (1318, 15184), (1898, 10544), (2336, 8567), (2636, 7592), (3796, 5272)]