349461520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{256957}}^1$

素因数の和:256987

約数の個数: 40

約数和(自身を含む): 860295384

約数和(自身を除く): 510833864

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 256957, 513914, 1027828, 1284785, 2055656, 2569570, 4111312, 4368269, 5139140, 8736538, 10278280, 17473076, 20556560, 21841345, 34946152, 43682690, 69892304, 87365380, 174730760, 349461520]

約数ペア:

[(1, 349461520), (2, 174730760), (4, 87365380), (5, 69892304), (8, 43682690), (10, 34946152), (16, 21841345), (17, 20556560), (20, 17473076), (34, 10278280), (40, 8736538), (68, 5139140), (80, 4368269), (85, 4111312), (136, 2569570), (170, 2055656), (272, 1284785), (340, 1027828), (680, 513914), (1360, 256957)]