399206912

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1621}}^1$

素因数の和:1689

約数の個数: 80

約数和(自身を含む): 882750792

約数和(自身を除く): 483543880

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 128, 148, 208, 256, 296, 416, 481, 512, 592, 832, 962, 1184, 1621, 1664, 1924, 2368, 3242, 3328, 3848, 4736, 6484, 6656, 7696, 9472, 12968, 15392, 18944, 21073, 25936, 30784, 42146, 51872, 59977, 61568, 84292, 103744, 119954, 123136, 168584, 207488, 239908, 246272, 337168, 414976, 479816, 674336, 779701, 829952, 959632, 1348672, 1559402, 1919264, 2697344, 3118804, 3838528, 5394688, 6237608, 7677056, 10789376, 12475216, 15354112, 24950432, 30708224, 49900864, 99801728, 199603456, 399206912]

約数ペア:

[(1, 399206912), (2, 199603456), (4, 99801728), (8, 49900864), (13, 30708224), (16, 24950432), (26, 15354112), (32, 12475216), (37, 10789376), (52, 7677056), (64, 6237608), (74, 5394688), (104, 3838528), (128, 3118804), (148, 2697344), (208, 1919264), (256, 1559402), (296, 1348672), (416, 959632), (481, 829952), (512, 779701), (592, 674336), (832, 479816), (962, 414976), (1184, 337168), (1621, 246272), (1664, 239908), (1924, 207488), (2368, 168584), (3242, 123136), (3328, 119954), (3848, 103744), (4736, 84292), (6484, 61568), (6656, 59977), (7696, 51872), (9472, 42146), (12968, 30784), (15392, 25936), (18944, 21073)]