20853616

素因数分解:

$2^4\times 7^2\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:486

約数の個数: 60

約数和(自身を含む): 47822088

約数和(自身を除く): 26968472

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 67, 98, 112, 134, 196, 268, 392, 397, 469, 536, 784, 794, 938, 1072, 1588, 1876, 2779, 3176, 3283, 3752, 5558, 6352, 6566, 7504, 11116, 13132, 19453, 22232, 26264, 26599, 38906, 44464, 52528, 53198, 77812, 106396, 155624, 186193, 212792, 311248, 372386, 425584, 744772, 1303351, 1489544, 2606702, 2979088, 5213404, 10426808, 20853616]

約数ペア:

[(1, 20853616), (2, 10426808), (4, 5213404), (7, 2979088), (8, 2606702), (14, 1489544), (16, 1303351), (28, 744772), (49, 425584), (56, 372386), (67, 311248), (98, 212792), (112, 186193), (134, 155624), (196, 106396), (268, 77812), (392, 53198), (397, 52528), (469, 44464), (536, 38906), (784, 26599), (794, 26264), (938, 22232), (1072, 19453), (1588, 13132), (1876, 11116), (2779, 7504), (3176, 6566), (3283, 6352), (3752, 5558)]