20926724

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 47190528

約数和(自身を除く): 26263804

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 49, 52, 86, 91, 98, 172, 182, 191, 196, 301, 364, 382, 559, 602, 637, 764, 1118, 1204, 1274, 1337, 2107, 2236, 2483, 2548, 2674, 3913, 4214, 4966, 5348, 7826, 8213, 8428, 9359, 9932, 15652, 16426, 17381, 18718, 27391, 32852, 34762, 37436, 54782, 57491, 69524, 106769, 109564, 114982, 121667, 213538, 229964, 243334, 402437, 427076, 486668, 747383, 804874, 1494766, 1609748, 2989532, 5231681, 10463362, 20926724]

約数ペア:

[(1, 20926724), (2, 10463362), (4, 5231681), (7, 2989532), (13, 1609748), (14, 1494766), (26, 804874), (28, 747383), (43, 486668), (49, 427076), (52, 402437), (86, 243334), (91, 229964), (98, 213538), (172, 121667), (182, 114982), (191, 109564), (196, 106769), (301, 69524), (364, 57491), (382, 54782), (559, 37436), (602, 34762), (637, 32852), (764, 27391), (1118, 18718), (1204, 17381), (1274, 16426), (1337, 15652), (2107, 9932), (2236, 9359), (2483, 8428), (2548, 8213), (2674, 7826), (3913, 5348), (4214, 4966)]