19979410

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 22010990

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 53, 55, 106, 110, 115, 149, 230, 253, 265, 298, 506, 530, 583, 745, 1166, 1219, 1265, 1490, 1639, 2438, 2530, 2915, 3278, 3427, 5830, 6095, 6854, 7897, 8195, 12190, 13409, 15794, 16390, 17135, 26818, 34270, 37697, 39485, 67045, 75394, 78970, 86867, 134090, 173734, 181631, 188485, 363262, 376970, 434335, 868670, 908155, 1816310, 1997941, 3995882, 9989705, 19979410]

約数ペア:

[(1, 19979410), (2, 9989705), (5, 3995882), (10, 1997941), (11, 1816310), (22, 908155), (23, 868670), (46, 434335), (53, 376970), (55, 363262), (106, 188485), (110, 181631), (115, 173734), (149, 134090), (230, 86867), (253, 78970), (265, 75394), (298, 67045), (506, 39485), (530, 37697), (583, 34270), (745, 26818), (1166, 17135), (1219, 16390), (1265, 15794), (1490, 13409), (1639, 12190), (2438, 8195), (2530, 7897), (2915, 6854), (3278, 6095), (3427, 5830)]