21048664

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{997}}^1$

素因数の和:1052

約数の個数: 64

約数和(自身を含む): 50299200

約数和(自身を除く): 29250536

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 29, 52, 56, 58, 91, 104, 116, 182, 203, 232, 364, 377, 406, 728, 754, 812, 997, 1508, 1624, 1994, 2639, 3016, 3988, 5278, 6979, 7976, 10556, 12961, 13958, 21112, 25922, 27916, 28913, 51844, 55832, 57826, 90727, 103688, 115652, 181454, 202391, 231304, 362908, 375869, 404782, 725816, 751738, 809564, 1503476, 1619128, 2631083, 3006952, 5262166, 10524332, 21048664]

約数ペア:

[(1, 21048664), (2, 10524332), (4, 5262166), (7, 3006952), (8, 2631083), (13, 1619128), (14, 1503476), (26, 809564), (28, 751738), (29, 725816), (52, 404782), (56, 375869), (58, 362908), (91, 231304), (104, 202391), (116, 181454), (182, 115652), (203, 103688), (232, 90727), (364, 57826), (377, 55832), (406, 51844), (728, 28913), (754, 27916), (812, 25922), (997, 21112), (1508, 13958), (1624, 12961), (1994, 10556), (2639, 7976), (3016, 6979), (3988, 5278)]