20989872

素因数分解:

$2^4\times 3^2\times {\mathrm{71}}^1\times {\mathrm{2053}}^1$

素因数の和:2138

約数の個数: 60

約数和(自身を含む): 59598864

約数和(自身を除く): 38608992

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 71, 72, 142, 144, 213, 284, 426, 568, 639, 852, 1136, 1278, 1704, 2053, 2556, 3408, 4106, 5112, 6159, 8212, 10224, 12318, 16424, 18477, 24636, 32848, 36954, 49272, 73908, 98544, 145763, 147816, 291526, 295632, 437289, 583052, 874578, 1166104, 1311867, 1749156, 2332208, 2623734, 3498312, 5247468, 6996624, 10494936, 20989872]

約数ペア:

[(1, 20989872), (2, 10494936), (3, 6996624), (4, 5247468), (6, 3498312), (8, 2623734), (9, 2332208), (12, 1749156), (16, 1311867), (18, 1166104), (24, 874578), (36, 583052), (48, 437289), (71, 295632), (72, 291526), (142, 147816), (144, 145763), (213, 98544), (284, 73908), (426, 49272), (568, 36954), (639, 32848), (852, 24636), (1136, 18477), (1278, 16424), (1704, 12318), (2053, 10224), (2556, 8212), (3408, 6159), (4106, 5112)]