19998914

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{631}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 34401024

約数和(自身を除く): 14402110

約数列:

[1, 2, 13, 23, 26, 46, 53, 106, 299, 598, 631, 689, 1219, 1262, 1378, 2438, 8203, 14513, 15847, 16406, 29026, 31694, 33443, 66886, 188669, 377338, 434759, 769189, 869518, 1538378, 9999457, 19998914]

約数ペア:

[(1, 19998914), (2, 9999457), (13, 1538378), (23, 869518), (26, 769189), (46, 434759), (53, 377338), (106, 188669), (299, 66886), (598, 33443), (631, 31694), (689, 29026), (1219, 16406), (1262, 15847), (1378, 14513), (2438, 8203)]