20778368

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12487}}^1$

素因数の和:12514

約数の個数: 32

約数和(自身を含む): 44582160

約数和(自身を除く): 23803792

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12487, 24974, 49948, 99896, 162331, 199792, 324662, 399584, 649324, 799168, 1298648, 1598336, 2597296, 5194592, 10389184, 20778368]

約数ペア:

[(1, 20778368), (2, 10389184), (4, 5194592), (8, 2597296), (13, 1598336), (16, 1298648), (26, 799168), (32, 649324), (52, 399584), (64, 324662), (104, 199792), (128, 162331), (208, 99896), (416, 49948), (832, 24974), (1664, 12487)]