20905440

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:564

約数の個数: 96

約数和(自身を含む): 66679200

約数和(自身を除く): 45773760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 97, 120, 160, 194, 240, 291, 388, 449, 480, 485, 582, 776, 898, 970, 1164, 1347, 1455, 1552, 1796, 1940, 2245, 2328, 2694, 2910, 3104, 3592, 3880, 4490, 4656, 5388, 5820, 6735, 7184, 7760, 8980, 9312, 10776, 11640, 13470, 14368, 15520, 17960, 21552, 23280, 26940, 35920, 43104, 43553, 46560, 53880, 71840, 87106, 107760, 130659, 174212, 215520, 217765, 261318, 348424, 435530, 522636, 653295, 696848, 871060, 1045272, 1306590, 1393696, 1742120, 2090544, 2613180, 3484240, 4181088, 5226360, 6968480, 10452720, 20905440]

約数ペア:

[(1, 20905440), (2, 10452720), (3, 6968480), (4, 5226360), (5, 4181088), (6, 3484240), (8, 2613180), (10, 2090544), (12, 1742120), (15, 1393696), (16, 1306590), (20, 1045272), (24, 871060), (30, 696848), (32, 653295), (40, 522636), (48, 435530), (60, 348424), (80, 261318), (96, 217765), (97, 215520), (120, 174212), (160, 130659), (194, 107760), (240, 87106), (291, 71840), (388, 53880), (449, 46560), (480, 43553), (485, 43104), (582, 35920), (776, 26940), (898, 23280), (970, 21552), (1164, 17960), (1347, 15520), (1455, 14368), (1552, 13470), (1796, 11640), (1940, 10776), (2245, 9312), (2328, 8980), (2694, 7760), (2910, 7184), (3104, 6735), (3592, 5820), (3880, 5388), (4490, 4656)]