78406340

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1\times {\mathrm{349}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 169344000

約数和(自身を除く): 90937660

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 239, 349, 470, 478, 698, 940, 956, 1195, 1396, 1745, 2390, 3490, 4780, 6980, 11233, 16403, 22466, 32806, 44932, 56165, 65612, 82015, 83411, 112330, 164030, 166822, 224660, 328060, 333644, 417055, 834110, 1668220, 3920317, 7840634, 15681268, 19601585, 39203170, 78406340]

約数ペア:

[(1, 78406340), (2, 39203170), (4, 19601585), (5, 15681268), (10, 7840634), (20, 3920317), (47, 1668220), (94, 834110), (188, 417055), (235, 333644), (239, 328060), (349, 224660), (470, 166822), (478, 164030), (698, 112330), (940, 83411), (956, 82015), (1195, 65612), (1396, 56165), (1745, 44932), (2390, 32806), (3490, 22466), (4780, 16403), (6980, 11233)]