256217910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{1483}}^1$

素因数の和:1949

約数の個数: 64

約数和(自身を含む): 664167168

約数和(自身を除く): 407949258

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 443, 886, 1329, 1483, 2215, 2658, 2966, 4430, 4449, 5759, 6645, 7415, 8898, 11518, 13290, 14830, 17277, 19279, 22245, 28795, 34554, 38558, 44490, 57590, 57837, 86385, 96395, 115674, 172770, 192790, 289185, 578370, 656969, 1313938, 1970907, 3284845, 3941814, 6569690, 8540597, 9854535, 17081194, 19709070, 25621791, 42702985, 51243582, 85405970, 128108955, 256217910]

約数ペア:

[(1, 256217910), (2, 128108955), (3, 85405970), (5, 51243582), (6, 42702985), (10, 25621791), (13, 19709070), (15, 17081194), (26, 9854535), (30, 8540597), (39, 6569690), (65, 3941814), (78, 3284845), (130, 1970907), (195, 1313938), (390, 656969), (443, 578370), (886, 289185), (1329, 192790), (1483, 172770), (2215, 115674), (2658, 96395), (2966, 86385), (4430, 57837), (4449, 57590), (5759, 44490), (6645, 38558), (7415, 34554), (8898, 28795), (11518, 22245), (13290, 19279), (14830, 17277)]