18984706

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{599}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 13674494

約数列:

[1, 2, 13, 23, 26, 46, 53, 106, 299, 598, 599, 689, 1198, 1219, 1378, 2438, 7787, 13777, 15574, 15847, 27554, 31694, 31747, 63494, 179101, 358202, 412711, 730181, 825422, 1460362, 9492353, 18984706]

約数ペア:

[(1, 18984706), (2, 9492353), (13, 1460362), (23, 825422), (26, 730181), (46, 412711), (53, 358202), (106, 179101), (299, 63494), (598, 31747), (599, 31694), (689, 27554), (1198, 15847), (1219, 15574), (1378, 13777), (2438, 7787)]