257657218

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{4523}}^1$

素因数の和:4858

約数の個数: 32

約数和(自身を含む): 477300096

約数和(自身を除く): 219642878

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 313, 626, 2191, 4069, 4382, 4523, 8138, 9046, 28483, 31661, 56966, 58799, 63322, 117598, 411593, 823186, 1415699, 2831398, 9909893, 18404087, 19819786, 36808174, 128828609, 257657218]

約数ペア:

[(1, 257657218), (2, 128828609), (7, 36808174), (13, 19819786), (14, 18404087), (26, 9909893), (91, 2831398), (182, 1415699), (313, 823186), (626, 411593), (2191, 117598), (4069, 63322), (4382, 58799), (4523, 56966), (8138, 31661), (9046, 28483)]