639997696

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{192307}}^1$

素因数の和:192336

約数の個数: 36

約数和(自身を含む): 1375771432

約数和(自身を除く): 735773736

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 192307, 384614, 769228, 1538456, 2499991, 3076912, 4999982, 6153824, 9999964, 12307648, 19999928, 24615296, 39999856, 49230592, 79999712, 159999424, 319998848, 639997696]

約数ペア:

[(1, 639997696), (2, 319998848), (4, 159999424), (8, 79999712), (13, 49230592), (16, 39999856), (26, 24615296), (32, 19999928), (52, 12307648), (64, 9999964), (104, 6153824), (128, 4999982), (208, 3076912), (256, 2499991), (416, 1538456), (832, 769228), (1664, 384614), (3328, 192307)]