19665944

素因数分解:

$2^3\times {\mathrm{29}}^2\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 39717600

約数和(自身を除く): 20051656

約数列:

[1, 2, 4, 8, 29, 37, 58, 74, 79, 116, 148, 158, 232, 296, 316, 632, 841, 1073, 1682, 2146, 2291, 2923, 3364, 4292, 4582, 5846, 6728, 8584, 9164, 11692, 18328, 23384, 31117, 62234, 66439, 84767, 124468, 132878, 169534, 248936, 265756, 339068, 531512, 678136, 2458243, 4916486, 9832972, 19665944]

約数ペア:

[(1, 19665944), (2, 9832972), (4, 4916486), (8, 2458243), (29, 678136), (37, 531512), (58, 339068), (74, 265756), (79, 248936), (116, 169534), (148, 132878), (158, 124468), (232, 84767), (296, 66439), (316, 62234), (632, 31117), (841, 23384), (1073, 18328), (1682, 11692), (2146, 9164), (2291, 8584), (2923, 6728), (3364, 5846), (4292, 4582)]