638494976

素因数分解:

$2^8\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20959}}^1$

素因数の和:20999

約数の個数: 72

約数和(自身を含む): 1542320640

約数和(自身を除く): 903825664

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 256, 272, 448, 476, 544, 896, 952, 1088, 1792, 1904, 2176, 3808, 4352, 7616, 15232, 20959, 30464, 41918, 83836, 146713, 167672, 293426, 335344, 356303, 586852, 670688, 712606, 1173704, 1341376, 1425212, 2347408, 2494121, 2682752, 2850424, 4694816, 4988242, 5365504, 5700848, 9389632, 9976484, 11401696, 18779264, 19952968, 22803392, 37558528, 39905936, 45606784, 79811872, 91213568, 159623744, 319247488, 638494976]

約数ペア:

[(1, 638494976), (2, 319247488), (4, 159623744), (7, 91213568), (8, 79811872), (14, 45606784), (16, 39905936), (17, 37558528), (28, 22803392), (32, 19952968), (34, 18779264), (56, 11401696), (64, 9976484), (68, 9389632), (112, 5700848), (119, 5365504), (128, 4988242), (136, 4694816), (224, 2850424), (238, 2682752), (256, 2494121), (272, 2347408), (448, 1425212), (476, 1341376), (544, 1173704), (896, 712606), (952, 670688), (1088, 586852), (1792, 356303), (1904, 335344), (2176, 293426), (3808, 167672), (4352, 146713), (7616, 83836), (15232, 41918), (20959, 30464)]