638326208

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{24749}}^1$

素因数の和:24805

約数の個数: 56

約数和(自身を含む): 1408176000

約数和(自身を除く): 769849792

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 208, 248, 403, 416, 496, 806, 832, 992, 1612, 1984, 3224, 6448, 12896, 24749, 25792, 49498, 98996, 197992, 321737, 395984, 643474, 767219, 791968, 1286948, 1534438, 1583936, 2573896, 3068876, 5147792, 6137752, 9973847, 10295584, 12275504, 19947694, 20591168, 24551008, 39895388, 49102016, 79790776, 159581552, 319163104, 638326208]

約数ペア:

[(1, 638326208), (2, 319163104), (4, 159581552), (8, 79790776), (13, 49102016), (16, 39895388), (26, 24551008), (31, 20591168), (32, 19947694), (52, 12275504), (62, 10295584), (64, 9973847), (104, 6137752), (124, 5147792), (208, 3068876), (248, 2573896), (403, 1583936), (416, 1534438), (496, 1286948), (806, 791968), (832, 767219), (992, 643474), (1612, 395984), (1984, 321737), (3224, 197992), (6448, 98996), (12896, 49498), (24749, 25792)]