219952719

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^2\times {\mathrm{173}}^1$

素因数の和:258

約数の個数: 72

約数和(自身を含む): 393942960

約数和(自身を除く): 173990241

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 173, 189, 217, 279, 441, 519, 651, 837, 961, 1211, 1323, 1519, 1557, 1953, 2883, 3633, 4557, 4671, 5363, 5859, 6727, 8477, 8649, 10899, 13671, 16089, 20181, 25431, 25947, 32697, 37541, 41013, 47089, 48267, 60543, 76293, 112623, 141267, 144801, 166253, 181629, 228879, 262787, 337869, 423801, 498759, 788361, 1013607, 1163771, 1271403, 1496277, 2365083, 3491313, 4488831, 7095249, 8146397, 10473939, 24439191, 31421817, 73317573, 219952719]

約数ペア:

[(1, 219952719), (3, 73317573), (7, 31421817), (9, 24439191), (21, 10473939), (27, 8146397), (31, 7095249), (49, 4488831), (63, 3491313), (93, 2365083), (147, 1496277), (173, 1271403), (189, 1163771), (217, 1013607), (279, 788361), (441, 498759), (519, 423801), (651, 337869), (837, 262787), (961, 228879), (1211, 181629), (1323, 166253), (1519, 144801), (1557, 141267), (1953, 112623), (2883, 76293), (3633, 60543), (4557, 48267), (4671, 47089), (5363, 41013), (5859, 37541), (6727, 32697), (8477, 25947), (8649, 25431), (10899, 20181), (13671, 16089)]