17881552

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{389}}^1$

素因数の和:440

約数の個数: 60

約数和(自身を含む): 39824460

約数和(自身を除く): 21942908

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 169, 208, 221, 272, 338, 389, 442, 676, 778, 884, 1352, 1556, 1768, 2704, 2873, 3112, 3536, 5057, 5746, 6224, 6613, 10114, 11492, 13226, 20228, 22984, 26452, 40456, 45968, 52904, 65741, 80912, 85969, 105808, 131482, 171938, 262964, 343876, 525928, 687752, 1051856, 1117597, 1375504, 2235194, 4470388, 8940776, 17881552]

約数ペア:

[(1, 17881552), (2, 8940776), (4, 4470388), (8, 2235194), (13, 1375504), (16, 1117597), (17, 1051856), (26, 687752), (34, 525928), (52, 343876), (68, 262964), (104, 171938), (136, 131482), (169, 105808), (208, 85969), (221, 80912), (272, 65741), (338, 52904), (389, 45968), (442, 40456), (676, 26452), (778, 22984), (884, 20228), (1352, 13226), (1556, 11492), (1768, 10114), (2704, 6613), (2873, 6224), (3112, 5746), (3536, 5057)]