31118920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{15877}}^1$

素因数の和:15902

約数の個数: 48

約数和(自身を含む): 81454140

約数和(自身を除く): 50335220

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 15877, 31754, 63508, 79385, 111139, 127016, 158770, 222278, 317540, 444556, 555695, 635080, 777973, 889112, 1111390, 1555946, 2222780, 3111892, 3889865, 4445560, 6223784, 7779730, 15559460, 31118920]

約数ペア:

[(1, 31118920), (2, 15559460), (4, 7779730), (5, 6223784), (7, 4445560), (8, 3889865), (10, 3111892), (14, 2222780), (20, 1555946), (28, 1111390), (35, 889112), (40, 777973), (49, 635080), (56, 555695), (70, 444556), (98, 317540), (140, 222278), (196, 158770), (245, 127016), (280, 111139), (392, 79385), (490, 63508), (980, 31754), (1960, 15877)]