21003516

素因数分解:

$2^2\times 3^3\times {\mathrm{439}}^1\times {\mathrm{443}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 54700800

約数和(自身を除く): 33697284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 439, 443, 878, 886, 1317, 1329, 1756, 1772, 2634, 2658, 3951, 3987, 5268, 5316, 7902, 7974, 11853, 11961, 15804, 15948, 23706, 23922, 47412, 47844, 194477, 388954, 583431, 777908, 1166862, 1750293, 2333724, 3500586, 5250879, 7001172, 10501758, 21003516]

約数ペア:

[(1, 21003516), (2, 10501758), (3, 7001172), (4, 5250879), (6, 3500586), (9, 2333724), (12, 1750293), (18, 1166862), (27, 777908), (36, 583431), (54, 388954), (108, 194477), (439, 47844), (443, 47412), (878, 23922), (886, 23706), (1317, 15948), (1329, 15804), (1756, 11961), (1772, 11853), (2634, 7974), (2658, 7902), (3951, 5316), (3987, 5268)]