20123516

素因数分解:

$2^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1237}}^1$

素因数の和:1338

約数の個数: 36

約数和(自身を含む): 41492808

約数和(自身を除く): 21369292

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 196, 332, 581, 1162, 1237, 2324, 2474, 4067, 4948, 8134, 8659, 16268, 17318, 34636, 60613, 102671, 121226, 205342, 242452, 410684, 718697, 1437394, 2874788, 5030879, 10061758, 20123516]

約数ペア:

[(1, 20123516), (2, 10061758), (4, 5030879), (7, 2874788), (14, 1437394), (28, 718697), (49, 410684), (83, 242452), (98, 205342), (166, 121226), (196, 102671), (332, 60613), (581, 34636), (1162, 17318), (1237, 16268), (2324, 8659), (2474, 8134), (4067, 4948)]