21590415

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:130

約数の個数: 128

約数和(自身を含む): 50135040

約数和(自身を除く): 28544625

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 31, 33, 35, 45, 55, 63, 67, 77, 93, 99, 105, 135, 155, 165, 189, 201, 217, 231, 279, 297, 315, 335, 341, 385, 465, 469, 495, 603, 651, 693, 737, 837, 945, 1005, 1023, 1085, 1155, 1395, 1407, 1485, 1705, 1809, 1953, 2077, 2079, 2211, 2345, 2387, 3015, 3069, 3255, 3465, 3685, 4185, 4221, 5115, 5159, 5859, 6231, 6633, 7035, 7161, 9045, 9207, 9765, 10385, 10395, 11055, 11935, 12663, 14539, 15345, 15477, 18693, 19899, 21105, 21483, 22847, 25795, 29295, 31155, 33165, 35805, 43617, 46035, 46431, 56079, 63315, 64449, 68541, 72695, 77385, 93465, 99495, 107415, 114235, 130851, 139293, 159929, 205623, 218085, 232155, 280395, 322245, 342705, 392553, 479787, 616869, 654255, 696465, 799645, 1028115, 1439361, 1962765, 2398935, 3084345, 4318083, 7196805, 21590415]

約数ペア:

[(1, 21590415), (3, 7196805), (5, 4318083), (7, 3084345), (9, 2398935), (11, 1962765), (15, 1439361), (21, 1028115), (27, 799645), (31, 696465), (33, 654255), (35, 616869), (45, 479787), (55, 392553), (63, 342705), (67, 322245), (77, 280395), (93, 232155), (99, 218085), (105, 205623), (135, 159929), (155, 139293), (165, 130851), (189, 114235), (201, 107415), (217, 99495), (231, 93465), (279, 77385), (297, 72695), (315, 68541), (335, 64449), (341, 63315), (385, 56079), (465, 46431), (469, 46035), (495, 43617), (603, 35805), (651, 33165), (693, 31155), (737, 29295), (837, 25795), (945, 22847), (1005, 21483), (1023, 21105), (1085, 19899), (1155, 18693), (1395, 15477), (1407, 15345), (1485, 14539), (1705, 12663), (1809, 11935), (1953, 11055), (2077, 10395), (2079, 10385), (2211, 9765), (2345, 9207), (2387, 9045), (3015, 7161), (3069, 7035), (3255, 6633), (3465, 6231), (3685, 5859), (4185, 5159), (4221, 5115)]