81391728

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1109}}^1$

素因数の和:1270

約数の個数: 80

約数和(自身を含む): 231235200

約数和(自身を除く): 149843472

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 139, 176, 264, 278, 417, 528, 556, 834, 1109, 1112, 1529, 1668, 2218, 2224, 3058, 3327, 3336, 4436, 4587, 6116, 6654, 6672, 8872, 9174, 12199, 12232, 13308, 17744, 18348, 24398, 24464, 26616, 36597, 36696, 48796, 53232, 73194, 73392, 97592, 146388, 154151, 195184, 292776, 308302, 462453, 585552, 616604, 924906, 1233208, 1695661, 1849812, 2466416, 3391322, 3699624, 5086983, 6782644, 7399248, 10173966, 13565288, 20347932, 27130576, 40695864, 81391728]

約数ペア:

[(1, 81391728), (2, 40695864), (3, 27130576), (4, 20347932), (6, 13565288), (8, 10173966), (11, 7399248), (12, 6782644), (16, 5086983), (22, 3699624), (24, 3391322), (33, 2466416), (44, 1849812), (48, 1695661), (66, 1233208), (88, 924906), (132, 616604), (139, 585552), (176, 462453), (264, 308302), (278, 292776), (417, 195184), (528, 154151), (556, 146388), (834, 97592), (1109, 73392), (1112, 73194), (1529, 53232), (1668, 48796), (2218, 36696), (2224, 36597), (3058, 26616), (3327, 24464), (3336, 24398), (4436, 18348), (4587, 17744), (6116, 13308), (6654, 12232), (6672, 12199), (8872, 9174)]