261168544

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{6899}}^1$

素因数の和:6942

約数の個数: 72

約数和(自身を含む): 636400800

約数和(自身を除く): 375232256

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 169, 182, 208, 224, 338, 364, 416, 676, 728, 1183, 1352, 1456, 2366, 2704, 2912, 4732, 5408, 6899, 9464, 13798, 18928, 27596, 37856, 48293, 55192, 89687, 96586, 110384, 179374, 193172, 220768, 358748, 386344, 627809, 717496, 772688, 1165931, 1255618, 1434992, 1545376, 2331862, 2511236, 2869984, 4663724, 5022472, 8161517, 9327448, 10044944, 16323034, 18654896, 20089888, 32646068, 37309792, 65292136, 130584272, 261168544]

約数ペア:

[(1, 261168544), (2, 130584272), (4, 65292136), (7, 37309792), (8, 32646068), (13, 20089888), (14, 18654896), (16, 16323034), (26, 10044944), (28, 9327448), (32, 8161517), (52, 5022472), (56, 4663724), (91, 2869984), (104, 2511236), (112, 2331862), (169, 1545376), (182, 1434992), (208, 1255618), (224, 1165931), (338, 772688), (364, 717496), (416, 627809), (676, 386344), (728, 358748), (1183, 220768), (1352, 193172), (1456, 179374), (2366, 110384), (2704, 96586), (2912, 89687), (4732, 55192), (5408, 48293), (6899, 37856), (9464, 27596), (13798, 18928)]