20997009504

素因数分解:

$2^5\times 3^2\times {\mathrm{1123}}^1\times {\mathrm{64921}}^1$

素因数の和:66060

約数の個数: 72

約数和(自身を含む): 59764336632

約数和(自身を除く): 38767327128

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288, 1123, 2246, 3369, 4492, 6738, 8984, 10107, 13476, 17968, 20214, 26952, 35936, 40428, 53904, 64921, 80856, 107808, 129842, 161712, 194763, 259684, 323424, 389526, 519368, 584289, 779052, 1038736, 1168578, 1558104, 2077472, 2337156, 3116208, 4674312, 6232416, 9348624, 18697248, 72906283, 145812566, 218718849, 291625132, 437437698, 583250264, 656156547, 874875396, 1166500528, 1312313094, 1749750792, 2333001056, 2624626188, 3499501584, 5249252376, 6999003168, 10498504752, 20997009504]

約数ペア:

[(1, 20997009504), (2, 10498504752), (3, 6999003168), (4, 5249252376), (6, 3499501584), (8, 2624626188), (9, 2333001056), (12, 1749750792), (16, 1312313094), (18, 1166500528), (24, 874875396), (32, 656156547), (36, 583250264), (48, 437437698), (72, 291625132), (96, 218718849), (144, 145812566), (288, 72906283), (1123, 18697248), (2246, 9348624), (3369, 6232416), (4492, 4674312), (6738, 3116208), (8984, 2337156), (10107, 2077472), (13476, 1558104), (17968, 1168578), (20214, 1038736), (26952, 779052), (35936, 584289), (40428, 519368), (53904, 389526), (64921, 323424), (80856, 259684), (107808, 194763), (129842, 161712)]