21547197

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 38338560

約数和(自身を除く): 16791363

約数列:

[1, 3, 7, 9, 19, 21, 47, 57, 63, 133, 141, 171, 329, 383, 399, 423, 893, 987, 1149, 1197, 2679, 2681, 2961, 3447, 6251, 7277, 8037, 8043, 18001, 18753, 21831, 24129, 50939, 54003, 56259, 65493, 126007, 152817, 162009, 342019, 378021, 458451, 1026057, 1134063, 2394133, 3078171, 7182399, 21547197]

約数ペア:

[(1, 21547197), (3, 7182399), (7, 3078171), (9, 2394133), (19, 1134063), (21, 1026057), (47, 458451), (57, 378021), (63, 342019), (133, 162009), (141, 152817), (171, 126007), (329, 65493), (383, 56259), (399, 54003), (423, 50939), (893, 24129), (987, 21831), (1149, 18753), (1197, 18001), (2679, 8043), (2681, 8037), (2961, 7277), (3447, 6251)]