21391344

素因数分解:

$2^4\times 3^3\times {\mathrm{13}}^2\times {\mathrm{293}}^1$

素因数の和:336

約数の個数: 120

約数和(自身を含む): 66714480

約数和(自身を除く): 45323136

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 36, 39, 48, 52, 54, 72, 78, 104, 108, 117, 144, 156, 169, 208, 216, 234, 293, 312, 338, 351, 432, 468, 507, 586, 624, 676, 702, 879, 936, 1014, 1172, 1352, 1404, 1521, 1758, 1872, 2028, 2344, 2637, 2704, 2808, 3042, 3516, 3809, 4056, 4563, 4688, 5274, 5616, 6084, 7032, 7618, 7911, 8112, 9126, 10548, 11427, 12168, 14064, 15236, 15822, 18252, 21096, 22854, 24336, 30472, 31644, 34281, 36504, 42192, 45708, 49517, 60944, 63288, 68562, 73008, 91416, 99034, 102843, 126576, 137124, 148551, 182832, 198068, 205686, 274248, 297102, 396136, 411372, 445653, 548496, 594204, 792272, 822744, 891306, 1188408, 1336959, 1645488, 1782612, 2376816, 2673918, 3565224, 5347836, 7130448, 10695672, 21391344]

約数ペア:

[(1, 21391344), (2, 10695672), (3, 7130448), (4, 5347836), (6, 3565224), (8, 2673918), (9, 2376816), (12, 1782612), (13, 1645488), (16, 1336959), (18, 1188408), (24, 891306), (26, 822744), (27, 792272), (36, 594204), (39, 548496), (48, 445653), (52, 411372), (54, 396136), (72, 297102), (78, 274248), (104, 205686), (108, 198068), (117, 182832), (144, 148551), (156, 137124), (169, 126576), (208, 102843), (216, 99034), (234, 91416), (293, 73008), (312, 68562), (338, 63288), (351, 60944), (432, 49517), (468, 45708), (507, 42192), (586, 36504), (624, 34281), (676, 31644), (702, 30472), (879, 24336), (936, 22854), (1014, 21096), (1172, 18252), (1352, 15822), (1404, 15236), (1521, 14064), (1758, 12168), (1872, 11427), (2028, 10548), (2344, 9126), (2637, 8112), (2704, 7911), (2808, 7618), (3042, 7032), (3516, 6084), (3809, 5616), (4056, 5274), (4563, 4688)]