12939940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 29543472

約数和(自身を除く): 16603532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 317, 628, 634, 785, 1268, 1570, 1585, 2041, 3140, 3170, 4082, 4121, 6340, 8164, 8242, 10205, 16484, 20410, 20605, 40820, 41210, 49769, 82420, 99538, 199076, 248845, 497690, 646997, 995380, 1293994, 2587988, 3234985, 6469970, 12939940]

約数ペア:

[(1, 12939940), (2, 6469970), (4, 3234985), (5, 2587988), (10, 1293994), (13, 995380), (20, 646997), (26, 497690), (52, 248845), (65, 199076), (130, 99538), (157, 82420), (260, 49769), (314, 41210), (317, 40820), (628, 20605), (634, 20410), (785, 16484), (1268, 10205), (1570, 8242), (1585, 8164), (2041, 6340), (3140, 4121), (3170, 4082)]