21783978

素因数分解:

$2^1\times 3^6\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:310

約数の個数: 56

約数和(自身を含む): 49945728

約数和(自身を除く): 28161750

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 67, 81, 134, 162, 201, 223, 243, 402, 446, 486, 603, 669, 729, 1206, 1338, 1458, 1809, 2007, 3618, 4014, 5427, 6021, 10854, 12042, 14941, 16281, 18063, 29882, 32562, 36126, 44823, 48843, 54189, 89646, 97686, 108378, 134469, 162567, 268938, 325134, 403407, 806814, 1210221, 2420442, 3630663, 7261326, 10891989, 21783978]

約数ペア:

[(1, 21783978), (2, 10891989), (3, 7261326), (6, 3630663), (9, 2420442), (18, 1210221), (27, 806814), (54, 403407), (67, 325134), (81, 268938), (134, 162567), (162, 134469), (201, 108378), (223, 97686), (243, 89646), (402, 54189), (446, 48843), (486, 44823), (603, 36126), (669, 32562), (729, 29882), (1206, 18063), (1338, 16281), (1458, 14941), (1809, 12042), (2007, 10854), (3618, 6021), (4014, 5427)]