31236940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{643}}^1$

素因数の和:1006

約数の個数: 48

約数和(自身を含む): 75301632

約数和(自身を除く): 44064692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 347, 643, 694, 1286, 1388, 1735, 2429, 2572, 3215, 3470, 4501, 4858, 6430, 6940, 9002, 9716, 12145, 12860, 18004, 22505, 24290, 45010, 48580, 90020, 223121, 446242, 892484, 1115605, 1561847, 2231210, 3123694, 4462420, 6247388, 7809235, 15618470, 31236940]

約数ペア:

[(1, 31236940), (2, 15618470), (4, 7809235), (5, 6247388), (7, 4462420), (10, 3123694), (14, 2231210), (20, 1561847), (28, 1115605), (35, 892484), (70, 446242), (140, 223121), (347, 90020), (643, 48580), (694, 45010), (1286, 24290), (1388, 22505), (1735, 18004), (2429, 12860), (2572, 12145), (3215, 9716), (3470, 9002), (4501, 6940), (4858, 6430)]