21499912

素因数分解:

$2^3\times 7^1\times {\mathrm{379}}^1\times {\mathrm{1013}}^1$

素因数の和:1405

約数の個数: 32

約数和(自身を含む): 46238400

約数和(自身を除く): 24738488

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 379, 758, 1013, 1516, 2026, 2653, 3032, 4052, 5306, 7091, 8104, 10612, 14182, 21224, 28364, 56728, 383927, 767854, 1535708, 2687489, 3071416, 5374978, 10749956, 21499912]

約数ペア:

[(1, 21499912), (2, 10749956), (4, 5374978), (7, 3071416), (8, 2687489), (14, 1535708), (28, 767854), (56, 383927), (379, 56728), (758, 28364), (1013, 21224), (1516, 14182), (2026, 10612), (2653, 8104), (3032, 7091), (4052, 5306)]