19721450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{29}}^2\times {\mathrm{67}}^1$

素因数の和:144

約数の個数: 72

約数和(自身を含む): 44065632

約数和(自身を除く): 24344182

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 35, 50, 58, 67, 70, 134, 145, 175, 203, 290, 335, 350, 406, 469, 670, 725, 841, 938, 1015, 1450, 1675, 1682, 1943, 2030, 2345, 3350, 3886, 4205, 4690, 5075, 5887, 8410, 9715, 10150, 11725, 11774, 13601, 19430, 21025, 23450, 27202, 29435, 42050, 48575, 56347, 58870, 68005, 97150, 112694, 136010, 147175, 281735, 294350, 340025, 394429, 563470, 680050, 788858, 1408675, 1972145, 2817350, 3944290, 9860725, 19721450]

約数ペア:

[(1, 19721450), (2, 9860725), (5, 3944290), (7, 2817350), (10, 1972145), (14, 1408675), (25, 788858), (29, 680050), (35, 563470), (50, 394429), (58, 340025), (67, 294350), (70, 281735), (134, 147175), (145, 136010), (175, 112694), (203, 97150), (290, 68005), (335, 58870), (350, 56347), (406, 48575), (469, 42050), (670, 29435), (725, 27202), (841, 23450), (938, 21025), (1015, 19430), (1450, 13601), (1675, 11774), (1682, 11725), (1943, 10150), (2030, 9715), (2345, 8410), (3350, 5887), (3886, 5075), (4205, 4690)]