20996987193

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{62683}}^1$

素因数の和:63118

約数の個数: 48

約数和(自身を含む): 37419840640

約数和(自身を除く): 16422853447

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 409, 819, 1227, 2863, 3681, 5317, 8589, 15951, 25767, 37219, 47853, 62683, 111657, 188049, 334971, 438781, 564147, 814879, 1316343, 2444637, 3949029, 5704153, 7333911, 17112459, 25637347, 51337377, 76912041, 179461429, 230736123, 333285511, 538384287, 999856533, 1615152861, 2332998577, 2999569599, 6998995731, 20996987193]

約数ペア:

[(1, 20996987193), (3, 6998995731), (7, 2999569599), (9, 2332998577), (13, 1615152861), (21, 999856533), (39, 538384287), (63, 333285511), (91, 230736123), (117, 179461429), (273, 76912041), (409, 51337377), (819, 25637347), (1227, 17112459), (2863, 7333911), (3681, 5704153), (5317, 3949029), (8589, 2444637), (15951, 1316343), (25767, 814879), (37219, 564147), (47853, 438781), (62683, 334971), (111657, 188049)]