21513128

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1019}}^1$

素因数の和:1074

約数の個数: 64

約数和(自身を含む): 51408000

約数和(自身を除く): 29894872

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, 1019, 1508, 1624, 2038, 2639, 3016, 4076, 5278, 7133, 8152, 10556, 13247, 14266, 21112, 26494, 28532, 29551, 52988, 57064, 59102, 92729, 105976, 118204, 185458, 206857, 236408, 370916, 384163, 413714, 741832, 768326, 827428, 1536652, 1654856, 2689141, 3073304, 5378282, 10756564, 21513128]

約数ペア:

[(1, 21513128), (2, 10756564), (4, 5378282), (7, 3073304), (8, 2689141), (13, 1654856), (14, 1536652), (26, 827428), (28, 768326), (29, 741832), (52, 413714), (56, 384163), (58, 370916), (91, 236408), (104, 206857), (116, 185458), (182, 118204), (203, 105976), (232, 92729), (364, 59102), (377, 57064), (406, 52988), (728, 29551), (754, 28532), (812, 26494), (1019, 21112), (1508, 14266), (1624, 13247), (2038, 10556), (2639, 8152), (3016, 7133), (4076, 5278)]