18439928

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{593}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 39132720

約数和(自身を除く): 20692792

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 169, 184, 299, 338, 593, 598, 676, 1186, 1196, 1352, 2372, 2392, 3887, 4744, 7709, 7774, 13639, 15418, 15548, 27278, 30836, 31096, 54556, 61672, 100217, 109112, 177307, 200434, 354614, 400868, 709228, 801736, 1418456, 2304991, 4609982, 9219964, 18439928]

約数ペア:

[(1, 18439928), (2, 9219964), (4, 4609982), (8, 2304991), (13, 1418456), (23, 801736), (26, 709228), (46, 400868), (52, 354614), (92, 200434), (104, 177307), (169, 109112), (184, 100217), (299, 61672), (338, 54556), (593, 31096), (598, 30836), (676, 27278), (1186, 15548), (1196, 15418), (1352, 13639), (2372, 7774), (2392, 7709), (3887, 4744)]