21090691778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{140659}}^1$

素因数の和:140826

約数の個数: 32

約数和(自身を含む): 34973702400

約数和(自身を除く): 13883010622

約数列:

[1, 2, 13, 26, 73, 79, 146, 158, 949, 1027, 1898, 2054, 5767, 11534, 74971, 140659, 149942, 281318, 1828567, 3657134, 10268107, 11112061, 20536214, 22224122, 133485391, 144456793, 266970782, 288913586, 811180453, 1622360906, 10545345889, 21090691778]

約数ペア:

[(1, 21090691778), (2, 10545345889), (13, 1622360906), (26, 811180453), (73, 288913586), (79, 266970782), (146, 144456793), (158, 133485391), (949, 22224122), (1027, 20536214), (1898, 11112061), (2054, 10268107), (5767, 3657134), (11534, 1828567), (74971, 281318), (140659, 149942)]