721000229872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{31801351}}^1$

素因数の和:31801481

約数の個数: 40

約数和(自身を含む): 1518196544480

約数和(自身を除く): 797196314608

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 872, 1417, 1744, 2834, 5668, 11336, 22672, 31801351, 63602702, 127205404, 254410808, 413417563, 508821616, 826835126, 1653670252, 3307340504, 3466347259, 6614681008, 6932694518, 13865389036, 27730778072, 45062514367, 55461556144, 90125028734, 180250057468, 360500114936, 721000229872]

約数ペア:

[(1, 721000229872), (2, 360500114936), (4, 180250057468), (8, 90125028734), (13, 55461556144), (16, 45062514367), (26, 27730778072), (52, 13865389036), (104, 6932694518), (109, 6614681008), (208, 3466347259), (218, 3307340504), (436, 1653670252), (872, 826835126), (1417, 508821616), (1744, 413417563), (2834, 254410808), (5668, 127205404), (11336, 63602702), (22672, 31801351)]