20639872

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 45606240

約数和(自身を除く): 24966368

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 107, 128, 137, 176, 214, 274, 352, 428, 548, 704, 856, 1096, 1177, 1408, 1507, 1712, 2192, 2354, 3014, 3424, 4384, 4708, 6028, 6848, 8768, 9416, 12056, 13696, 14659, 17536, 18832, 24112, 29318, 37664, 48224, 58636, 75328, 96448, 117272, 150656, 161249, 192896, 234544, 322498, 469088, 644996, 938176, 1289992, 1876352, 2579984, 5159968, 10319936, 20639872]

約数ペア:

[(1, 20639872), (2, 10319936), (4, 5159968), (8, 2579984), (11, 1876352), (16, 1289992), (22, 938176), (32, 644996), (44, 469088), (64, 322498), (88, 234544), (107, 192896), (128, 161249), (137, 150656), (176, 117272), (214, 96448), (274, 75328), (352, 58636), (428, 48224), (548, 37664), (704, 29318), (856, 24112), (1096, 18832), (1177, 17536), (1408, 14659), (1507, 13696), (1712, 12056), (2192, 9416), (2354, 8768), (3014, 6848), (3424, 6028), (4384, 4708)]