20619830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:525

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 26520010

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 61, 70, 77, 110, 122, 154, 305, 385, 427, 439, 610, 671, 770, 854, 878, 1342, 2135, 2195, 3073, 3355, 4270, 4390, 4697, 4829, 6146, 6710, 9394, 9658, 15365, 23485, 24145, 26779, 30730, 33803, 46970, 48290, 53558, 67606, 133895, 169015, 187453, 267790, 294569, 338030, 374906, 589138, 937265, 1472845, 1874530, 2061983, 2945690, 4123966, 10309915, 20619830]

約数ペア:

[(1, 20619830), (2, 10309915), (5, 4123966), (7, 2945690), (10, 2061983), (11, 1874530), (14, 1472845), (22, 937265), (35, 589138), (55, 374906), (61, 338030), (70, 294569), (77, 267790), (110, 187453), (122, 169015), (154, 133895), (305, 67606), (385, 53558), (427, 48290), (439, 46970), (610, 33803), (671, 30730), (770, 26779), (854, 24145), (878, 23485), (1342, 15365), (2135, 9658), (2195, 9394), (3073, 6710), (3355, 6146), (4270, 4829), (4390, 4697)]