78271228

素因数分解:

$2^2\times 7^3\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:755

約数の個数: 48

約数和(自身を含む): 161784000

約数和(自身を除く): 83512772

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 196, 343, 356, 623, 641, 686, 1246, 1282, 1372, 2492, 2564, 4361, 4487, 8722, 8974, 17444, 17948, 30527, 31409, 57049, 61054, 62818, 114098, 122108, 125636, 219863, 228196, 399343, 439726, 798686, 879452, 1597372, 2795401, 5590802, 11181604, 19567807, 39135614, 78271228]

約数ペア:

[(1, 78271228), (2, 39135614), (4, 19567807), (7, 11181604), (14, 5590802), (28, 2795401), (49, 1597372), (89, 879452), (98, 798686), (178, 439726), (196, 399343), (343, 228196), (356, 219863), (623, 125636), (641, 122108), (686, 114098), (1246, 62818), (1282, 61054), (1372, 57049), (2492, 31409), (2564, 30527), (4361, 17948), (4487, 17444), (8722, 8974)]