19418776

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 40318560

約数和(自身を除く): 20899784

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 169, 212, 271, 338, 424, 542, 676, 689, 1084, 1352, 1378, 2168, 2756, 3523, 5512, 7046, 8957, 14092, 14363, 17914, 28184, 28726, 35828, 45799, 57452, 71656, 91598, 114904, 183196, 186719, 366392, 373438, 746876, 1493752, 2427347, 4854694, 9709388, 19418776]

約数ペア:

[(1, 19418776), (2, 9709388), (4, 4854694), (8, 2427347), (13, 1493752), (26, 746876), (52, 373438), (53, 366392), (104, 186719), (106, 183196), (169, 114904), (212, 91598), (271, 71656), (338, 57452), (424, 45799), (542, 35828), (676, 28726), (689, 28184), (1084, 17914), (1352, 14363), (1378, 14092), (2168, 8957), (2756, 7046), (3523, 5512)]