28807376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138497}}^1$

素因数の和:138518

約数の個数: 20

約数和(自身を含む): 60108132

約数和(自身を除く): 31300756

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138497, 276994, 553988, 1107976, 1800461, 2215952, 3600922, 7201844, 14403688, 28807376]

約数ペア:

[(1, 28807376), (2, 14403688), (4, 7201844), (8, 3600922), (13, 2215952), (16, 1800461), (26, 1107976), (52, 553988), (104, 276994), (208, 138497)]