721648

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:121

約数の個数: 40

約数和(自身を含む): 1526688

約数和(自身を除く): 805040

約数列:

[1, 2, 4, 8, 16, 23, 37, 46, 53, 74, 92, 106, 148, 184, 212, 296, 368, 424, 592, 848, 851, 1219, 1702, 1961, 2438, 3404, 3922, 4876, 6808, 7844, 9752, 13616, 15688, 19504, 31376, 45103, 90206, 180412, 360824, 721648]

約数ペア:

[(1, 721648), (2, 360824), (4, 180412), (8, 90206), (16, 45103), (23, 31376), (37, 19504), (46, 15688), (53, 13616), (74, 9752), (92, 7844), (106, 6808), (148, 4876), (184, 3922), (212, 3404), (296, 2438), (368, 1961), (424, 1702), (592, 1219), (848, 851)]