1638980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 4112640

約数和(自身を除く): 2473660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 509, 644, 805, 1018, 1610, 2036, 2545, 3220, 3563, 5090, 7126, 10180, 11707, 14252, 17815, 23414, 35630, 46828, 58535, 71260, 81949, 117070, 163898, 234140, 327796, 409745, 819490, 1638980]

約数ペア:

[(1, 1638980), (2, 819490), (4, 409745), (5, 327796), (7, 234140), (10, 163898), (14, 117070), (20, 81949), (23, 71260), (28, 58535), (35, 46828), (46, 35630), (70, 23414), (92, 17815), (115, 14252), (140, 11707), (161, 10180), (230, 7126), (322, 5090), (460, 3563), (509, 3220), (644, 2545), (805, 2036), (1018, 1610)]