21563451

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{233}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 17276805

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 113, 117, 233, 273, 339, 699, 791, 819, 1017, 1469, 1631, 2097, 2373, 3029, 4407, 4893, 7119, 9087, 10283, 13221, 14679, 21203, 26329, 27261, 30849, 63609, 78987, 92547, 184303, 190827, 236961, 342277, 552909, 1026831, 1658727, 2395939, 3080493, 7187817, 21563451]

約数ペア:

[(1, 21563451), (3, 7187817), (7, 3080493), (9, 2395939), (13, 1658727), (21, 1026831), (39, 552909), (63, 342277), (91, 236961), (113, 190827), (117, 184303), (233, 92547), (273, 78987), (339, 63609), (699, 30849), (791, 27261), (819, 26329), (1017, 21203), (1469, 14679), (1631, 13221), (2097, 10283), (2373, 9087), (3029, 7119), (4407, 4893)]