78940120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1097}}^1$

素因数の和:1372

約数の個数: 64

約数和(自身を含む): 203964480

約数和(自身を除く): 125024360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 514, 1028, 1097, 1285, 1799, 2056, 2194, 2570, 3598, 4388, 5140, 5485, 7196, 7679, 8776, 8995, 10280, 10970, 14392, 15358, 17990, 21940, 30716, 35980, 38395, 43880, 61432, 71960, 76790, 153580, 281929, 307160, 563858, 1127716, 1409645, 1973503, 2255432, 2819290, 3947006, 5638580, 7894012, 9867515, 11277160, 15788024, 19735030, 39470060, 78940120]

約数ペア:

[(1, 78940120), (2, 39470060), (4, 19735030), (5, 15788024), (7, 11277160), (8, 9867515), (10, 7894012), (14, 5638580), (20, 3947006), (28, 2819290), (35, 2255432), (40, 1973503), (56, 1409645), (70, 1127716), (140, 563858), (257, 307160), (280, 281929), (514, 153580), (1028, 76790), (1097, 71960), (1285, 61432), (1799, 43880), (2056, 38395), (2194, 35980), (2570, 30716), (3598, 21940), (4388, 17990), (5140, 15358), (5485, 14392), (7196, 10970), (7679, 10280), (8776, 8995)]