21278214

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:287

約数の個数: 80

約数和(自身を含む): 52039680

約数和(自身を除く): 30761466

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 31, 38, 54, 57, 62, 81, 93, 114, 162, 171, 186, 223, 279, 342, 446, 513, 558, 589, 669, 837, 1026, 1178, 1338, 1539, 1674, 1767, 2007, 2511, 3078, 3534, 4014, 4237, 5022, 5301, 6021, 6913, 8474, 10602, 12042, 12711, 13826, 15903, 18063, 20739, 25422, 31806, 36126, 38133, 41478, 47709, 62217, 76266, 95418, 114399, 124434, 131347, 186651, 228798, 262694, 343197, 373302, 394041, 559953, 686394, 788082, 1119906, 1182123, 2364246, 3546369, 7092738, 10639107, 21278214]

約数ペア:

[(1, 21278214), (2, 10639107), (3, 7092738), (6, 3546369), (9, 2364246), (18, 1182123), (19, 1119906), (27, 788082), (31, 686394), (38, 559953), (54, 394041), (57, 373302), (62, 343197), (81, 262694), (93, 228798), (114, 186651), (162, 131347), (171, 124434), (186, 114399), (223, 95418), (279, 76266), (342, 62217), (446, 47709), (513, 41478), (558, 38133), (589, 36126), (669, 31806), (837, 25422), (1026, 20739), (1178, 18063), (1338, 15903), (1539, 13826), (1674, 12711), (1767, 12042), (2007, 10602), (2511, 8474), (3078, 6913), (3534, 6021), (4014, 5301), (4237, 5022)]