19748240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7963}}^1$

素因数の和:8007

約数の個数: 40

約数和(自身を含む): 47401728

約数和(自身を除く): 27653488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7963, 15926, 31852, 39815, 63704, 79630, 127408, 159260, 246853, 318520, 493706, 637040, 987412, 1234265, 1974824, 2468530, 3949648, 4937060, 9874120, 19748240]

約数ペア:

[(1, 19748240), (2, 9874120), (4, 4937060), (5, 3949648), (8, 2468530), (10, 1974824), (16, 1234265), (20, 987412), (31, 637040), (40, 493706), (62, 318520), (80, 246853), (124, 159260), (155, 127408), (248, 79630), (310, 63704), (496, 39815), (620, 31852), (1240, 15926), (2480, 7963)]