21645414

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{173}}^1\times {\mathrm{331}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 55457280

約数和(自身を除く): 33811866

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 173, 189, 331, 346, 378, 519, 662, 993, 1038, 1211, 1557, 1986, 2317, 2422, 2979, 3114, 3633, 4634, 4671, 5958, 6951, 7266, 8937, 9342, 10899, 13902, 17874, 20853, 21798, 32697, 41706, 57263, 62559, 65394, 114526, 125118, 171789, 343578, 400841, 515367, 801682, 1030734, 1202523, 1546101, 2405046, 3092202, 3607569, 7215138, 10822707, 21645414]

約数ペア:

[(1, 21645414), (2, 10822707), (3, 7215138), (6, 3607569), (7, 3092202), (9, 2405046), (14, 1546101), (18, 1202523), (21, 1030734), (27, 801682), (42, 515367), (54, 400841), (63, 343578), (126, 171789), (173, 125118), (189, 114526), (331, 65394), (346, 62559), (378, 57263), (519, 41706), (662, 32697), (993, 21798), (1038, 20853), (1211, 17874), (1557, 13902), (1986, 10899), (2317, 9342), (2422, 8937), (2979, 7266), (3114, 6951), (3633, 5958), (4634, 4671)]