21280168

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29231}}^1$

素因数の和:29257

約数の個数: 32

約数和(自身を含む): 49109760

約数和(自身を除く): 27829592

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 29231, 58462, 116924, 204617, 233848, 380003, 409234, 760006, 818468, 1520012, 1636936, 2660021, 3040024, 5320042, 10640084, 21280168]

約数ペア:

[(1, 21280168), (2, 10640084), (4, 5320042), (7, 3040024), (8, 2660021), (13, 1636936), (14, 1520012), (26, 818468), (28, 760006), (52, 409234), (56, 380003), (91, 233848), (104, 204617), (182, 116924), (364, 58462), (728, 29231)]