20398968

素因数分解:

$2^3\times 3^2\times {\mathrm{449}}^1\times {\mathrm{631}}^1$

素因数の和:1092

約数の個数: 48

約数和(自身を含む): 55458000

約数和(自身を除く): 35059032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 449, 631, 898, 1262, 1347, 1796, 1893, 2524, 2694, 3592, 3786, 4041, 5048, 5388, 5679, 7572, 8082, 10776, 11358, 15144, 16164, 22716, 32328, 45432, 283319, 566638, 849957, 1133276, 1699914, 2266552, 2549871, 3399828, 5099742, 6799656, 10199484, 20398968]

約数ペア:

[(1, 20398968), (2, 10199484), (3, 6799656), (4, 5099742), (6, 3399828), (8, 2549871), (9, 2266552), (12, 1699914), (18, 1133276), (24, 849957), (36, 566638), (72, 283319), (449, 45432), (631, 32328), (898, 22716), (1262, 16164), (1347, 15144), (1796, 11358), (1893, 10776), (2524, 8082), (2694, 7572), (3592, 5679), (3786, 5388), (4041, 5048)]