256458748

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:683

約数の個数: 72

約数和(自身を含む): 565884144

約数和(自身を除く): 309425396

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 251, 364, 401, 502, 637, 802, 1004, 1274, 1604, 1757, 2548, 2807, 3263, 3514, 5213, 5614, 6526, 7028, 10426, 11228, 12299, 13052, 19649, 20852, 22841, 24598, 36491, 39298, 45682, 49196, 72982, 78596, 91364, 100651, 145964, 159887, 201302, 255437, 319774, 402604, 510874, 639548, 704557, 1021748, 1308463, 1409114, 2616926, 2818228, 4931899, 5233852, 9159241, 9863798, 18318482, 19727596, 36636964, 64114687, 128229374, 256458748]

約数ペア:

[(1, 256458748), (2, 128229374), (4, 64114687), (7, 36636964), (13, 19727596), (14, 18318482), (26, 9863798), (28, 9159241), (49, 5233852), (52, 4931899), (91, 2818228), (98, 2616926), (182, 1409114), (196, 1308463), (251, 1021748), (364, 704557), (401, 639548), (502, 510874), (637, 402604), (802, 319774), (1004, 255437), (1274, 201302), (1604, 159887), (1757, 145964), (2548, 100651), (2807, 91364), (3263, 78596), (3514, 72982), (5213, 49196), (5614, 45682), (6526, 39298), (7028, 36491), (10426, 24598), (11228, 22841), (12299, 20852), (13052, 19649)]