257161736

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{11719}}^1$

素因数の和:11949

約数の個数: 32

約数和(自身を含む): 521774400

約数和(自身を除く): 264612664

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 211, 422, 844, 1688, 2743, 5486, 10972, 11719, 21944, 23438, 46876, 93752, 152347, 304694, 609388, 1218776, 2472709, 4945418, 9890836, 19781672, 32145217, 64290434, 128580868, 257161736]

約数ペア:

[(1, 257161736), (2, 128580868), (4, 64290434), (8, 32145217), (13, 19781672), (26, 9890836), (52, 4945418), (104, 2472709), (211, 1218776), (422, 609388), (844, 304694), (1688, 152347), (2743, 93752), (5486, 46876), (10972, 23438), (11719, 21944)]