21973329

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 40704000

約数和(自身を除く): 18730671

約数列:

[1, 3, 7, 9, 19, 21, 27, 29, 57, 63, 87, 133, 171, 189, 203, 211, 261, 399, 513, 551, 609, 633, 783, 1197, 1477, 1653, 1827, 1899, 3591, 3857, 4009, 4431, 4959, 5481, 5697, 6119, 11571, 12027, 13293, 14877, 18357, 28063, 34713, 36081, 39879, 42833, 55071, 84189, 104139, 108243, 116261, 128499, 165213, 252567, 348783, 385497, 757701, 813827, 1046349, 1156491, 2441481, 3139047, 7324443, 21973329]

約数ペア:

[(1, 21973329), (3, 7324443), (7, 3139047), (9, 2441481), (19, 1156491), (21, 1046349), (27, 813827), (29, 757701), (57, 385497), (63, 348783), (87, 252567), (133, 165213), (171, 128499), (189, 116261), (203, 108243), (211, 104139), (261, 84189), (399, 55071), (513, 42833), (551, 39879), (609, 36081), (633, 34713), (783, 28063), (1197, 18357), (1477, 14877), (1653, 13293), (1827, 12027), (1899, 11571), (3591, 6119), (3857, 5697), (4009, 5481), (4431, 4959)]